Exam 14: Analyzing Quantitative Data

You enter a prison that has many inmates of varying ages. You must interview one inmate for a research project. This inmate should be just in the middle of the age distribution of inmates-that is, an inmate who is younger than half the other inmates and older than the other half. Which statistic should you use?

(Multiple Choice)

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Question 21

What type of distribution has data that is clustered on the right side.

(Short Answer)

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Question 22

The interquartile range avoids the problem created by unusually high or low scores in a distribution.

(True/False)

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Question 23

What will be the relation between the values of the median and mean in a negatively skewed distribution?

(Multiple Choice)

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Question 24

When grouping variables, intervals should be exhaustive and mutually exclusive.

(True/False)

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Question 25

The following questions refer to the table below describing the association between education level and drug use: Education Level Drug UseLowHighTotalYes210190400No290310600Total5005001,000 -What is the term for the numbers 400 and 600?

(Multiple Choice)

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Question 26

List and define the three measures of central tendency.

(Essay)

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Question 27

What is the interquartile range in the following array of ages: 28, 37, 29, 30, 20, 40, 25, 26, 26, 35, 37, 40?

(Multiple Choice)

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Question 28

The range is the most mathematically complicated measure of dispersion.

(True/False)

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Question 29

List the four aspects of the association between two variables that are revealed in a cross-tabulation and the questions that each aspect seeks to answer.

(Essay)

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Question 30

The highest value in a distribution minus the lowest value in the distribution will provide the central tendency.

(True/False)

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Question 31

Describe what it means for a variable's distribution to be normally distributed.

(Essay)

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Question 32

What does Pearson's r refer to?

(Short Answer)

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Question 33

In order to calculate measures of variation, the data must be at the ordinal or ratio level.

(True/False)

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Question 34

Describe the purpose of performing an elaboration analysis and provide an example.

(Essay)

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Question 35

Describe how inferential statistics are used by researchers.

(Essay)

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Question 36

Provide an example of a relationship that can be examined in a regression analysis.

(Short Answer)

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Question 37

Using this set of numbers, 2, 2, 4, 6, 9, 11, 14, 18, 21, 33, calculate the median.

(Multiple Choice)

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Question 38

Discuss an advantage of the range as a measure of variability.

(Short Answer)

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Question 39

Identify a circumstance in which the mean would be least appropriate to use when summarizing the central tendency of variables?

(Short Answer)

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Question 40

Showing 21 - 40 of 75

What type of distribution has data that is clustered on the right side.

The interquartile range avoids the problem created by unusually high or low scores in a distribution.

What will be the relation between the values of the median and mean in a negatively skewed distribution?

When grouping variables, intervals should be exhaustive and mutually exclusive.

The following questions refer to the table below describing the association between education level and drug use: Education Level Drug UseLowHighTotalYes210190400No290310600Total5005001,000 -What is the term for the numbers 400 and 600?

List and define the three measures of central tendency.

What is the interquartile range in the following array of ages: 28, 37, 29, 30, 20, 40, 25, 26, 26, 35, 37, 40?

The range is the most mathematically complicated measure of dispersion.

List the four aspects of the association between two variables that are revealed in a cross-tabulation and the questions that each aspect seeks to answer.

The highest value in a distribution minus the lowest value in the distribution will provide the central tendency.

Describe what it means for a variable's distribution to be normally distributed.

What does Pearson's r refer to?

In order to calculate measures of variation, the data must be at the ordinal or ratio level.

Describe the purpose of performing an elaboration analysis and provide an example.

Describe how inferential statistics are used by researchers.

Provide an example of a relationship that can be examined in a regression analysis.

Using this set of numbers, 2, 2, 4, 6, 9, 11, 14, 18, 21, 33, calculate the median.

Discuss an advantage of the range as a measure of variability.

Identify a circumstance in which the mean would be least appropriate to use when summarizing the central tendency of variables?

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