Exam 8: Nominal and Ordinal Measures of Association

For describing a relationship between two variables, what information does a measure of association provide that an examination of percents, medians, or modes in a crosstab does not?

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Question 1

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A measure of association more completely summarizes the relationship between two variables. Percents, medians, and modes typically focus on just select aspects of the relationship resulting sometimes in contradictory conclusions.

Which of the following is most appropriate for measuring the relationship between a nominal and an ordinal variable?

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Question 2

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Explain the difference between a positive association between two variables and a negative relationship between two variables.

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Question 3

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When two variables are positively related, cases with high scores on one variable tend to have high scores on the other. Cases with low scores on one variable tend to have low scores on the other. When two variables are negatively related, however, cases with high scores on one variable tend to have low scores on the other. Cases with low scores on one variable tend to have high scores on the other.

If you know nothing about a person, the best guess to make about his or her religion is whatever the most common religion is. Always guessing the most common religion, you will make quite a few incorrect guesses. Assume the value of lambda for the relationship between race and religious affiliation is .65. By what proportion could you reduce your number of errors if, before you guess their religious affiliation, you are told their race?

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Question 4

Which of the following is most appropriate for measuring the relationship between an ordinal variable and an ordinal variable?

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Question 5

You want to see if there is a positive relationship between social class and number of friends. Which type of analysis should you do?

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Question 6

Which statistic is modeled after Pearson's r but transforms the scores on both variables to ranks before calculating the measure of association?

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Question 7

How do you decide for a pair of variables whether you need a nominal, ordinal, or interval/ratio measure of association?

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Question 8

Your hypothesis is that the taller a person is, the more self-confident he or she is. Height is an interval/ratio variable measured in inches; self-confidence is a five category ordinal variable with higher scores indicating greater self-confidence. The value of Somers' d is −.68. Does this measure of association

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Question 9

Which of the following tau-b coefficients indicates the strongest relationship?

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Question 10

Which of the following values for a statistic is clearly incorrect because it is outside the statistic's range?

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Question 11

The height of a child and the age of a child are

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Question 12

What is the difference between a concordant pair of cases and a discordant pair of cases?

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Question 13

If two variables are positively related, cases that have low scores on one variable will tend to have _____ scores on the other variable.

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Question 14

You want to see what percent of persons in each region say they are very happy with their life. Which type of analysis should you do?

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Question 15

Which of the following measures of association comes in an asymmetric form?

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Question 16

What is the difference between a symmetric and an asymmetric measure of association?

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Question 17

If Jim and Mary form a concordant pair on the variables height and weight, then

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Question 18

Which measures of association indicate the strength of a relationship?

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Question 19

Which measures of association indicate the direction of a relationship?

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Question 20

Showing 1 - 20 of 38

For describing a relationship between two variables, what information does a measure of association provide that an examination of percents, medians, or modes in a crosstab does not?

Which of the following is most appropriate for measuring the relationship between a nominal and an ordinal variable?

Explain the difference between a positive association between two variables and a negative relationship between two variables.

Which of the following is most appropriate for measuring the relationship between an ordinal variable and an ordinal variable?

You want to see if there is a positive relationship between social class and number of friends. Which type of analysis should you do?

Which statistic is modeled after Pearson's r but transforms the scores on both variables to ranks before calculating the measure of association?

How do you decide for a pair of variables whether you need a nominal, ordinal, or interval/ratio measure of association?

Which of the following tau-b coefficients indicates the strongest relationship?

Which of the following values for a statistic is clearly incorrect because it is outside the statistic's range?

The height of a child and the age of a child are

What is the difference between a concordant pair of cases and a discordant pair of cases?

If two variables are positively related, cases that have low scores on one variable will tend to have _____ scores on the other variable.

You want to see what percent of persons in each region say they are very happy with their life. Which type of analysis should you do?

Which of the following measures of association comes in an asymmetric form?

What is the difference between a symmetric and an asymmetric measure of association?

If Jim and Mary form a concordant pair on the variables height and weight, then

Which measures of association indicate the strength of a relationship?

Which measures of association indicate the direction of a relationship?

Introduction

Data Sets

Frequency Tables and Univariate Charts

Central Tendency and Dispersion

Creating New Variables

Comparing Group Means

Crosstab Tables

Pearsons Correlation and Bivariate Regression

Multiple Regression

Sampling Distributions and Normal Distributions

Hypothesis Testing and One-Sample T Tests

Paired and Independent-Samples T Tests

Analysis of Variance

Chi-Square

Hypothesis Testing With Measures of Association and Regression

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