Question 1

A perfect association between variables can be seen on a scatterplot when

Accepted Answer

A)  all dots lie an equal distance from the regression line 
B)  all dots lie on the regression line 
C)  the regression line forms a right angle at its intersection with the X axis 
D)  the regression line is parallel to the X axis 
A)  all dots lie an equal distance from the regression line 
B)  all dots lie on the regression line 
C)  the regression line forms a right angle at its intersection with the X axis 
D)  the regression line is parallel to the X axis

Question 2

If you wanted to measure the association between the age of people (in years) and the number of arrests for driving while intoxicated, the most appropriate measure of association would be

Accepted Answer

A)  gamma 
B)  lambda 
C)  phi 
D)  Pearson's r 
A)  gamma 
B)  lambda 
C)  phi 
D)  Pearson's r

Question 3

In regression analysis, the symbol "a" stands for

Accepted Answer

A)  the scores on the Y variable 
B)  the slope 
C)  the Y intercept 
D)  the X intercept 
A)  the scores on the Y variable 
B)  the slope 
C)  the Y intercept 
D)  the X intercept

Question 4

If we calculate an r of .60, the proportion of the variation of Y that is explained by X is

Accepted Answer

A)  .36 
B)  .40 
C)  .60 
D)  .64 
A)  .36 
B)  .40 
C)  .60 
D)  .64

Question 5

The position of the least-squares regression line is defined by two elements:

Accepted Answer

A)  the X intercept and the slope of the line 
B)  the X intercept and the Y intercept 
C)  the Y intercept and the slope of the line 
D)  the intersection point of the X and Y axes and the slope of the line 
A)  the X intercept and the slope of the line 
B)  the X intercept and the Y intercept 
C)  the Y intercept and the slope of the line 
D)  the intersection point of the X and Y axes and the slope of the line

A perfect association between variables can be seen on a scatterplot when

If you wanted to measure the association between the age of people (in years) and the number of arrests for driving while intoxicated, the most appropriate measure of association would be

In regression analysis, the symbol "a" stands for

If we calculate an r of .60, the proportion of the variation of Y that is explained by X is

The position of the least-squares regression line is defined by two elements:

Introduction

Basic Descriptive Statistics Percentages, Ratios Rates, Tables, Charts Graphs

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction to Inferential Statistics Sampling the Sampling Distribution

Hypothesis Testing I the One-Sample Case

Hypothesis Testing II the Two-Sample Case

Hypothesis Testing III: the Analysis of Variance

Hypothesis Testing Iv Chi Square

Bivariate Association for Nominal- and Ordinal-Level Variables

Partial Correlation and

Filters

Exam 12: Association Between Variables Measured at the Interval-Ratio Level

A perfect association between variables can be seen on a scatterplot when

If you wanted to measure the association between the age of people (in years) and the number of arrests for driving while intoxicated, the most appropriate measure of association would be

In regression analysis, the symbol "a" stands for

If we calculate an r of .60, the proportion of the variation of Y that is explained by X is

The position of the least-squares regression line is defined by two elements:

Introduction

Basic Descriptive Statistics Percentages, Ratios Rates, Tables, Charts Graphs

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction to Inferential Statistics Sampling the Sampling Distribution

Hypothesis Testing I the One-Sample Case

Hypothesis Testing II the Two-Sample Case

Hypothesis Testing III: the Analysis of Variance

Hypothesis Testing Iv Chi Square

Bivariate Association for Nominal- and Ordinal-Level Variables

Partial Correlation and

Filters