## 01 Feb 1. What type of research uses numeric measurement data? (Points : 3)

1.

What type of research uses numeric

measurement data? (Points : 3)

2.

What type of research uses a research

hypothesis? (Points : 3)

3.

What type of research does not use

statistical data analysis? (Points : 3)

.

4.

What type of research preempts all

other types of research endeavors? (Points : 3)

5.

Business research is a type of

________________ inquiry. (Points : 3)

6.

What are the three main types of

non-probability sampling used in business research? (Points : 3)

7.

In a situation where in a confidence

level .01 what percent of the measurement results are left to chance? (Points

: 3)

8.

What is the most important ingredient

in a statistical testing procedure? (Points : 3)

9.

If a production manager wanted to

determine whether or not the first shift was processing more widgets than the

second shift, what type of statistical process would be used? (Points : 3)

10.

What type of t test seeks to

determine whether or not a relationship exists in one sample over two

conditions? _______________ (Points : 3)

11.

Which of the examples below represent the

Ratio level of scaling?

A) A high temperature of 83 degrees

Fahrenheit

B) A survey result that 24 students work full time, 36, part time.

C) Bill is consistently rated most effective communicator of his group.

D) Gallup says that 60% of the

voters support the incumbent.

E) Pick up three pounds of ground

beef please.

F) Patty acts as expected based on her first-born family position.

G) Seattle at an altitude of

67 feet is higher than Death Valley at an altitude of 120.

H) The door is 37 inches wide, the door frame is 36 inches wide.

(Points : 3)

B, C and F

D, E and G

C, F and H

A, E and H

12.Select those issues

that only relate to selecting a specific statistical test. (Do not select

items common to all tests or not applying to statistical tests.) (Points :

3)

The distribution (shape) of the population

(e.g., normal, skewed, flat, etc.)

The measurement scale/nature of the data

being evaluated (nominal, ordinal, interval or ratio)

The size of the population (assuming it is

much larger than any samples)

The level of significance (_) you wish to

place on the test results

Whether you have matched/related or

unmatched/unrelated samples

The degrees of freedom (sample size)

associated with your sample(s)

The statement of the null and research

hypotheses

Whether the sample was stratified or not

13.

Which of the following apply to Populations?

A) parameter

B) Roman letters, i.e.: x, s

C) A bounded, defined complete group (people, objects, etc.) having

something in common to be described in its totality

D) Greek letters, i.e.: ?, ?

E) One or more subsets of a larger defined group, used to represent the

larger group

F) 170 Republicans selected randomly from King County voter records

G) All Democrats in the state of Washington (totality)

(Points : 3)

A, B, E

B, C, D

C, D, G

E, F, G

14.

As an Argosy student, you are designing a

training program to help develop team cohesiveness in a healthcare

facility. You have a before and after test which measures behaviors

indicating team cohesiveness. For this scenario, which of the following

represents the Null hypothesis?

A) H1: There is a significant difference in

the teaming behavior before and after the training.

B) H0: There is no significant difference in the teaming behavior

before and after the

training.

C) H1: There is no significant difference in the teaming behavior before

and after the

training.

D) H0: There is a significant difference in the teaming behavior before and

after the training

(Points : 3)

H1: There is a significant difference in

the teaming behavior before and after the training.

H0: There is no significant difference in

the teaming behavior before and after the training.

H1: There is no significant difference in

the teaming behavior before and after the training.

H0: There is a significant difference in

the teaming behavior before and after the training

15.The sole purpose of

business research is to increase profit margins? (Points : 1)

True

False

16.When conducting

business research the investigator must make his/her opinions known about

possible results? (Points : 1)

True

False

17.When one is

conducting business research the most important factor is developing a

reasonable researchable question? (Points : 1)

True

False

18.Business research

should always begin with an alternate hypothesis? (Points : 1)

True

False

19.The null hypothesis

states that a difference, effect or relationship exists in a research

situation? (Points : 1)

True

False

20.The confidence level

expresses the degree of certainty that an interval will include the actual

value of the population parameter? (Points : 1)

True

False

21.

Calculation:The mean price of 5 items is $7.00.

The prices of the first four items are $6.50, $8.00, $5.50

and $6.00. How much does the fifth item cost? (Points : 4)

22.

Calculation:The range of a set of numbers is

1,362. The greatest number is 2,172. What is the least number? (Points : 4)

24.

Calculation:Find the mode of the following test

scores:

89, 78, 91, 82, 75, 89, 84, 95, 89, 93

(Points : 4)

.

25.

Calculation:The mean of a set of data is 174.25

and the sum of the data is 1,394. How many numbers are in the set? (Points :

4)

26.

Calculation:The grade point averages of 10

students are listed below. Find the median grade point average.

3.15, 3.62, 2.54, 2.81, 3.97, 1.85,

1.93, 2.63, 2.50, 2.80 (Points : 4)

27.

Calculation:Given the following raw scores,

calculate the following values: Range, Variance and Standard Deviation, show

your calculations:

Scores: 9, 7, 8, 4, 8, 8,7, 8, 9, 6, 3 (Points : 5)

28.A large mass of data

can best be summarized pictorially by means of: (Points : 3)

the range

a histogram

the frequency table

mean and standard deviation

29.For a symmetric

distribution, the mean and median are (Points : 3)

the same

always different

possibly the same, possibly different

insufficient information.

30.A distribution of 6

scores has a median of 21. If the highest score increases 3 points, the

median will become (Points : 3)

21

21.5

24

Cannot be determined without additional

information

none of these

31.If you are told a

population has a mean of 25 and a variance of 0, what must you conclude?

(Points : 3)

Someone has made a mistake.

There is only one element in the

population.

There are no elements in the

population.

All the elements in the population are 25.

None of the above.

32.Which of the

following measures of central tendency tends to be most influenced by an

extreme score? (Points : 3)

median

mode

mean

33.Which of the

following is not a measure of central tendency? (Points : 3)

mean

median

mode

standard deviation

none of these

34.A graphical

presentation may accomplish ALL BUT which of the following

objectives? (Points : 3)

Illustrate the amount of variation in the

data.

Illustrate approximately where the mean

is

Allow comparison with similar data

Will have the exact same shape regardless

of what units are used on the axes.

35.A coach in a large

high school thinks that ballet training will improve the batting

performance of his baseball team. He decides to have a randomly

selected half of the team take six weeks of ballet training before the

baseball season begins, while the other half does not take such

training. He will then compare the season batting averages of group A

(those with ballet training) and group B (those without ballet training) by

comparing the mean of group A with the mean of group B.

An independent variable is: (Points : 3)

ballet training

batting average

runs batted in

the size of the school

the grades the players make in the ballet

school

36.

Word Problems:Prepare the frequency distribution

table and the frequency histogram for this data set.

The following data represent scores of 50 students in an applied business

statistics test.

72 72 93

70 59 78

74 65 73 80

57 67 72

57 83 76

74 56 68 67

74 76 79

72 61 72

73 76 67 49

71 53 67 65

100 83 69

61 72 68

65 51 75

68 75 66

77 61 64 74 (Points :

4)

Bin

2

37.

Word Problems:Compute the sample mean, sample

median X(M), sample range, and sample variance.

The following data represent scores of 50 students in an applied business

statistics test.

72 72 93

70 59 78

74 65 73 80

57 67 72

57 83 76

74 56 68 67

74 76 79

72 61 72

73 76 67 49

71 53 67 65

100 83 69

61 72 68

65 51 75

68 75 66

77 61 64 74 (Points :

4)

38.

Word Problem:Does the data set represent a sample

or a population? If it is a sample, describe the population from which it has

been drawn.

The following data represent scores of 50 students in an applied business

statistics test.

72 72 93 70

59 78 74

65 73 80

57 67 72

57 83 76

74 56 68 67

74 76 79

72 61 72

73 76 67 49

71 53 67 65

100 83 69

61 72 68

65 51 75

68 75 66

77 61 64 74 (Points :

4)

39.

Word Problems: The number of widgets produced by 9

employees in an eight hour shift is recorded as: 135, 120,

116, 119, 121, 125, 135, 131, 123

Find the mean number of widgets produced. (Points : 3)

40.

Word Problems: The number of widgets produced by 9

employees in an eight hour shift is recorded as: 135, 120,

116, 119, 121, 125, 135, 131, 123

What is the range of widgets produced given in the problem presented above?

(Points : 3)

41.

Word Problems: The number of widgets produced by 9

employees in an eight hour shift is recorded as: 135, 120,

116, 119, 121, 125, 135, 131, 123

What is the mode of the number of widgets produced presented above? (Points :

3)

42.

Word Problems: The number of widgets produced by 9

employees in an eight hour shift is recorded as: 135, 120,

116, 119, 121, 125, 135, 131, 123

43.

Critical Thinking:Two workers on the same job show the

following results over a long period of time.Thinking: Two workers on the same job show the

following results over a long period of time.

47.

Critical Thinking:Explain why histograms and frequency

polygons are used in business statistics. (Points : 10)

48.

Critical Thinking: Which two types of probability

sampling are best suited for business research and statistical data analysis,

and why? (Points : 10)

49.

Critical Thinking:What is the difference between a null

hypothesis and an alternate hypothesis? (Points : 10)

50.

Critical Thinking:Explain what is meant by the critical

value of a statistical value. (Points : 10)

51.

Critical Thinking:What is the difference between a t

test for independent means and a correlated t test? (Points : 10)

52.

Critical Thinking: Explain the .05 confidence level.

(Points : 10)

53.

Critical Thinking:How is a research question similar to

a research hypothesis? (Points : 10)

54.

Critical Thinking:Describe each of the following

statistical terms, and where applicable, define with the appropriate

equation: Range, Variance, Standard Deviation (Points : 10)

55.

Critical Thinking: Give a brief definition and an

example of the following:

a. Descriptive Statistics Descriptive statistics uses basic statistical

computations to analyze data. Examples of descriptive statistics are mean,

median, mode, variance, range, standard deviation, and IQR.

b. Inferential Statistics Inferential statistics uses descriptive statistics

of data to deduce inferences on a data sample. An example of inferential

statistics is using the descriptive statistics of two samples and using a

t-test for independent samples to infer a difference between the sample

means.

(Points : 10)

56.

Critical Thinking:What does the correlation coefficient

r describe? What about r squared? (Points : 10)

57.

Critical Thinking: Describe some of

the issues or concerns (at least three) which would be addressed in deciding

how to perform a statistical test of a hypothesis: (Points : 15)

58.

Critical Thinking: Discuss the implications of:

magnitude (from 0 to 1); sign ( + or -); and probability versus causality for

the Correlation Coefficient (also known as the Pearson Product-Moment

Correlation Coefficient). (Points : 15)

59.

Critical Thinking: Describe how you would develop a

random sample from among Argosy students (Points : 15)

1.

What type of research uses numeric

measurement data? (Points : 3) 2.

What type of research uses a research

hypothesis? (Points : 3) 3.

What type of research does not use

statistical data analysis? (Points : 3) .4.

What type of research preempts all

other types of research endeavors? (Points : 3) 5.

Business research is a type of

________________ inquiry. (Points : 3) 6.

What are the three main types of

non-probability sampling used in business research? (Points : 3) 7.

In a situation where in a confidence

level .01 what percent of the measurement results are left to chance? (Points

: 3) 8.

What is the most important ingredient

in a statistical testing procedure? (Points : 3) 9.

If a production manager wanted to

determine whether or not the first shift was processing more widgets than the

second shift, what type of statistical process would be used? (Points : 3) 10.

What type of t test seeks to

determine whether or not a relationship exists in one sample over two

conditions? _______________ (Points : 3) 11.Which of the examples below represent the

Ratio level of scaling?A) A high temperature of 83 degrees

Fahrenheit

B) A survey result that 24 students work full time, 36, part time.

C) Bill is consistently rated most effective communicator of his group.

D) Gallup says that 60% of the

voters support the incumbent.

E) Pick up three pounds of ground

beef please.

F) Patty acts as expected based on her first-born family position.

G) Seattle at an altitude of

67 feet is higher than Death Valley at an altitude of 120.

H) The door is 37 inches wide, the door frame is 36 inches wide.(Points : 3) B, C and F

D, E and G

C, F and H

A, E and H

12.Select those issues

that only relate to selecting a specific statistical test. (Do not select

items common to all tests or not applying to statistical tests.) (Points :

3) The distribution (shape) of the population

(e.g., normal, skewed, flat, etc.)

The measurement scale/nature of the data

being evaluated (nominal, ordinal, interval or ratio)

The size of the population (assuming it is

much larger than any samples)

The level of significance (_) you wish to

place on the test results

Whether you have matched/related or

unmatched/unrelated samples

The degrees of freedom (sample size)

associated with your sample(s)

The statement of the null and research

hypotheses

Whether the sample was stratified or not

13.Which of the following apply to Populations?

A) parameter

B) Roman letters, i.e.: x, s

C) A bounded, defined complete group (people, objects, etc.) having

something in common to be described in its totality

D) Greek letters, i.e.: ?, ?

E) One or more subsets of a larger defined group, used to represent the

larger group

F) 170 Republicans selected randomly from King County voter records

G) All Democrats in the state of Washington (totality)(Points : 3) A, B, E

B, C, D

C, D, G

E, F, G

14.As an Argosy student, you are designing a

training program to help develop team cohesiveness in a healthcare

facility. You have a before and after test which measures behaviors

indicating team cohesiveness. For this scenario, which of the following

represents the Null hypothesis?A) H1: There is a significant difference in

the teaming behavior before and after the training.

B) H0: There is no significant difference in the teaming behavior

before and after the

training.

C) H1: There is no significant difference in the teaming behavior before

and after the

training.

D) H0: There is a significant difference in the teaming behavior before and

after the training (Points : 3) H1: There is a significant difference in

the teaming behavior before and after the training.

H0: There is no significant difference in

the teaming behavior before and after the training.

H1: There is no significant difference in

the teaming behavior before and after the training.

H0: There is a significant difference in

the teaming behavior before and after the training

15.The sole purpose of

business research is to increase profit margins? (Points : 1) True

False

16.When conducting

business research the investigator must make his/her opinions known about

possible results? (Points : 1) True

False

17.When one is

conducting business research the most important factor is developing a

reasonable researchable question? (Points : 1) True

False

18.Business research

should always begin with an alternate hypothesis? (Points : 1) True

False

19.The null hypothesis

states that a difference, effect or relationship exists in a research

situation? (Points : 1) True

False

20.The confidence level

expresses the degree of certainty that an interval will include the actual

value of the population parameter? (Points : 1) True

False

21.

Calculation:The mean price of 5 items is $7.00.

The prices of the first four items are $6.50, $8.00, $5.50

and $6.00. How much does the fifth item cost? (Points : 4) 22.

Calculation:The range of a set of numbers is

1,362. The greatest number is 2,172. What is the least number? (Points : 4) 24.

Calculation:Find the mode of the following test

scores:

89, 78, 91, 82, 75, 89, 84, 95, 89, 93

(Points : 4) . 25.

Calculation:The mean of a set of data is 174.25

and the sum of the data is 1,394. How many numbers are in the set? (Points :

4) 26.

Calculation:The grade point averages of 10

students are listed below. Find the median grade point average.

3.15, 3.62, 2.54, 2.81, 3.97, 1.85,

1.93, 2.63, 2.50, 2.80 (Points : 4) 27.

Calculation:Given the following raw scores,

calculate the following values: Range, Variance and Standard Deviation, show

your calculations:

Scores: 9, 7, 8, 4, 8, 8,7, 8, 9, 6, 3 (Points : 5) 28.A large mass of data

can best be summarized pictorially by means of: (Points : 3) the range

a histogram

the frequency table

mean and standard deviation

29.For a symmetric

distribution, the mean and median are (Points : 3) the same

always different

possibly the same, possibly different

insufficient information.

30.A distribution of 6

scores has a median of 21. If the highest score increases 3 points, the

median will become (Points : 3) 21

21.5

24

Cannot be determined without additional

information

none of these

31.If you are told a

population has a mean of 25 and a variance of 0, what must you conclude?

(Points : 3) Someone has made a mistake.

There is only one element in the

population.

There are no elements in the

population.

All the elements in the population are 25.

None of the above.

32.Which of the

following measures of central tendency tends to be most influenced by an

extreme score? (Points : 3) median

mode

mean

33.Which of the

following is not a measure of central tendency? (Points : 3) mean

median

mode

standard deviation

none of these

34.A graphical

presentation may accomplish ALL BUT which of the following

objectives? (Points : 3) Illustrate the amount of variation in the

data.

Illustrate approximately where the mean

is

Allow comparison with similar data

Will have the exact same shape regardless

of what units are used on the axes.

35.A coach in a large

high school thinks that ballet training will improve the batting

performance of his baseball team. He decides to have a randomly

selected half of the team take six weeks of ballet training before the

baseball season begins, while the other half does not take such

training. He will then compare the season batting averages of group A

(those with ballet training) and group B (those without ballet training) by

comparing the mean of group A with the mean of group B.

An independent variable is: (Points : 3) ballet training

batting average

runs batted in

the size of the school

the grades the players make in the ballet

school

36.

Word Problems:Prepare the frequency distribution

table and the frequency histogram for this data set.

The following data represent scores of 50 students in an applied business

statistics test.

72 72 93

70 59 78

74 65 73 80

57 67 72

57 83 76

74 56 68 67

74 76 79

72 61 72

73 76 67 49

71 53 67 65

100 83 69

61 72 68

65 51 75

68 75 66

77 61 64 74 (Points :

4)

Bin2

37.

Word Problems:Compute the sample mean, sample

median X(M), sample range, and sample variance.

The following data represent scores of 50 students in an applied business

statistics test.

72 72 93

70 59 78

74 65 73 80

57 67 72

57 83 76

74 56 68 67

74 76 79

72 61 72

73 76 67 49

71 53 67 65

100 83 69

61 72 68

65 51 75

68 75 66

77 61 64 74 (Points :

4) 38.

Word Problem:Does the data set represent a sample

or a population? If it is a sample, describe the population from which it has

been drawn.

The following data represent scores of 50 students in an applied business

statistics test.

72 72 93 70

59 78 74

65 73 80

57 67 72

57 83 76

74 56 68 67

74 76 79

72 61 72

73 76 67 49

71 53 67 65

100 83 69

61 72 68

65 51 75

68 75 66

77 61 64 74 (Points :

4) 39.

Word Problems: The number of widgets produced by 9

employees in an eight hour shift is recorded as: 135, 120,

116, 119, 121, 125, 135, 131, 123

Find the mean number of widgets produced. (Points : 3)

40.

Word Problems: The number of widgets produced by 9

employees in an eight hour shift is recorded as: 135, 120,

116, 119, 121, 125, 135, 131, 123

What is the range of widgets produced given in the problem presented above?

(Points : 3) 41.

Word Problems: The number of widgets produced by 9

employees in an eight hour shift is recorded as: 135, 120,

116, 119, 121, 125, 135, 131, 123

What is the mode of the number of widgets produced presented above? (Points :

3) 42.

Word Problems: The number of widgets produced by 9

employees in an eight hour shift is recorded as: 135, 120,

116, 119, 121, 125, 135, 131, 123

43.

Critical Thinking:Two workers on the same job show the

following results over a long period of time.Thinking: Two workers on the same job show the

following results over a long period of time.47.

Critical Thinking:Explain why histograms and frequency

polygons are used in business statistics. (Points : 10) 48.

Critical Thinking: Which two types of probability

sampling are best suited for business research and statistical data analysis,

and why? (Points : 10) 49.

Critical Thinking:What is the difference between a null

hypothesis and an alternate hypothesis? (Points : 10) 50.

Critical Thinking:Explain what is meant by the critical

value of a statistical value. (Points : 10) 51.

Critical Thinking:What is the difference between a t

test for independent means and a correlated t test? (Points : 10) 52.

Critical Thinking: Explain the .05 confidence level.

(Points : 10) 53.

Critical Thinking:How is a research question similar to

a research hypothesis? (Points : 10) 54.

Critical Thinking:Describe each of the following

statistical terms, and where applicable, define with the appropriate

equation: Range, Variance, Standard Deviation (Points : 10) 55.

Critical Thinking: Give a brief definition and an

example of the following:

a. Descriptive Statistics Descriptive statistics uses basic statistical

computations to analyze data. Examples of descriptive statistics are mean,

median, mode, variance, range, standard deviation, and IQR.

b. Inferential Statistics Inferential statistics uses descriptive statistics

of data to deduce inferences on a data sample. An example of inferential

statistics is using the descriptive statistics of two samples and using a

t-test for independent samples to infer a difference between the sample

means. (Points : 10)

56.

Critical Thinking:What does the correlation coefficient

r describe? What about r squared? (Points : 10) 57.

Critical Thinking: Describe some of

the issues or concerns (at least three) which would be addressed in deciding

how to perform a statistical test of a hypothesis: (Points : 15) 58.

Critical Thinking: Discuss the implications of:

magnitude (from 0 to 1); sign ( + or -); and probability versus causality for

the Correlation Coefficient (also known as the Pearson Product-Moment

Correlation Coefficient). (Points : 15) 59.

Critical Thinking: Describe how you would develop a

random sample from among Argosy students (Points : 15)

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