Question 1

A PRE measure of 1 indicates what?

Accepted Answer

A)  no association 
B)  perfect association 
C)  a 100% improvement in the odds of predicting the dependent variable 
D)  no improvement in the odds of predicting the dependent variable 
A)  no association 
B)  perfect association 
C)  a 100% improvement in the odds of predicting the dependent variable 
D)  no improvement in the odds of predicting the dependent variable

Question 2

Lambda is designed to measure the strength of a relationship between two categorical variables, at least one of which is a nominal-level relationship.

Accepted Answer

A) True 
 B)False

Question 3

The ______ allows the researcher to determine the exact probability of a particular result occurring by chance.

Accepted Answer

A)  test of significance 
B)  p value approach 
C)  standard error approach 
D)  confidence interval approach 
A)  test of significance 
B)  p value approach 
C)  standard error approach 
D)  confidence interval approach

Question 4

A sample statistics tells us exactly how many standard errors separate the sample difference from zero.

Accepted Answer

A) True 
 B)False

Question 5

A researcher who concludes that a relationship exists between X and Y when it does not has committed a ______.

Accepted Answer

A)  faux pas 
B)  Type I error 
C)  Type II error 
D)  Type III error 
A)  faux pas 
B)  Type I error 
C)  Type II error 
D)  Type III error

Question 6

A researcher who has two categorical level variables with one measured at the nominal level should use Somers' dyx to test the association between them.

Accepted Answer

A) True 
 B)False

Question 7

The assumption that there is no difference between the attitudes of males and females on abortion rights is called a null hypothesis.

Accepted Answer

A) True 
 B)False

Question 8

A relationship between which of the following pairs of variables could be tested using $\chi$2?

Accepted Answer

A)  income and age in years 
B)  weight and the number of cigarettes smoked 
C)  political party and frequency of church attendance 
D)  race and income (in dollars) 
A)  income and age in years 
B)  weight and the number of cigarettes smoked 
C)  political party and frequency of church attendance 
D)  race and income (in dollars)

Question 9

Cramer's V is a good PRE to use when comparing two interval-level variables.

Accepted Answer

A) True 
 B)False

Question 10

When researchers compare two sample statistics, however, we have two sources of uncertainty: both sample statistics have random sampling error.

Accepted Answer

A) True 
 B)False

Question 11

The eyeball test of statistical significance is based on the confidence interval approach.

Accepted Answer

A) True 
 B)False

Question 12

The p value for a test statistic is based on the expected sampling distribution and can be found on a probability distribution table.

Accepted Answer

A) True 
 B)False

Question 13

Concordant pairs are cell values consistent with a(n) ______ relationship.

Accepted Answer

A)  negative 
B)  neutral 
C)  inverse 
D)  positive 
A)  negative 
B)  neutral 
C)  inverse 
D)  positive

Question 14

When comparing two sample means, we can safely reject the null hypothesis if ______.

Accepted Answer

A)  the confidence intervals overlap 
B)  the confidence intervals are higher than .05 
C)  the confidence intervals are lower than .05 
D)  the confidence intervals do not overlap 
A)  the confidence intervals overlap 
B)  the confidence intervals are higher than .05 
C)  the confidence intervals are lower than .05 
D)  the confidence intervals do not overlap

Question 15

A ______ marks the upper plausible boundary of random error and so defines H0's limit.

Accepted Answer

A)  critical value 
B)  discordant pair 
C)  test statistics 
D)  confidence interval 
A)  critical value 
B)  discordant pair 
C)  test statistics 
D)  confidence interval

A PRE measure of 1 indicates what?

Lambda is designed to measure the strength of a relationship between two categorical variables, at least one of which is a nominal-level relationship.

The ______ allows the researcher to determine the exact probability of a particular result occurring by chance.

A sample statistics tells us exactly how many standard errors separate the sample difference from zero.

A researcher who concludes that a relationship exists between X and Y when it does not has committed a ______.

A researcher who has two categorical level variables with one measured at the nominal level should use Somers' d_yx to test the association between them.

The assumption that there is no difference between the attitudes of males and females on abortion rights is called a null hypothesis.

A relationship between which of the following pairs of variables could be tested using $\chi$ ²?

Cramer's V is a good PRE to use when comparing two interval-level variables.

When researchers compare two sample statistics, however, we have two sources of uncertainty: both sample statistics have random sampling error.

The eyeball test of statistical significance is based on the confidence interval approach.

The p value for a test statistic is based on the expected sampling distribution and can be found on a probability distribution table.

Concordant pairs are cell values consistent with a(n) ______ relationship.

When comparing two sample means, we can safely reject the null hypothesis if ______.

A ______ marks the upper plausible boundary of random error and so defines H₀'s limit.

The Definition and Measurement of Concepts

Measuring and Describing Variables

Proposing Explanations, Framing Hypotheses, and Making Comparisons

Research Design, Research Ethics, and Evidence of Causation

Making Controlled Comparisons

Foundations of Statistical Inference

Correlation and Linear Regression

Logistic Regression

Filters

Exam 7: Tests of Significance and Measures of Association

A PRE measure of 1 indicates what?

Lambda is designed to measure the strength of a relationship between two categorical variables, at least one of which is a nominal-level relationship.

The ______ allows the researcher to determine the exact probability of a particular result occurring by chance.

A sample statistics tells us exactly how many standard errors separate the sample difference from zero.

A researcher who concludes that a relationship exists between X and Y when it does not has committed a ______.

A researcher who has two categorical level variables with one measured at the nominal level should use Somers' dyx to test the association between them.

The assumption that there is no difference between the attitudes of males and females on abortion rights is called a null hypothesis.

A relationship between which of the following pairs of variables could be tested using χ\chiχ 2?

Cramer's V is a good PRE to use when comparing two interval-level variables.

When researchers compare two sample statistics, however, we have two sources of uncertainty: both sample statistics have random sampling error.

The eyeball test of statistical significance is based on the confidence interval approach.

The p value for a test statistic is based on the expected sampling distribution and can be found on a probability distribution table.

Concordant pairs are cell values consistent with a(n) ______ relationship.

When comparing two sample means, we can safely reject the null hypothesis if ______.

A ______ marks the upper plausible boundary of random error and so defines H0's limit.

The Definition and Measurement of Concepts

Measuring and Describing Variables

Proposing Explanations, Framing Hypotheses, and Making Comparisons

Research Design, Research Ethics, and Evidence of Causation

Making Controlled Comparisons

Foundations of Statistical Inference

Correlation and Linear Regression

Logistic Regression

Filters

A researcher who has two categorical level variables with one measured at the nominal level should use Somers' d_yx to test the association between them.

A relationship between which of the following pairs of variables could be tested using $\chi$ ²?

A ______ marks the upper plausible boundary of random error and so defines H₀'s limit.