Question 1

If a regression line is parallel to the horizontal axis of the scattergram,the slope (b)will be

Accepted Answer

A) 1.00 
B) -1.00 
C) 0.00 
D) 0.45 
A) 1.00 
B) -1.00 
C) 0.00 
D) 0.45

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

Scattergrams do NOT give information about the ____ of a relationship.

Accepted Answer

A) strength 
B) direction 
C) linearity 
D) significance 
A) strength 
B) direction 
C) linearity 
D) significance

Question 4

The direction of a relationship between variables can be detected on a scattergram by considering the angle of the regression line.The relationship is

Accepted Answer

A) positive when the line slopes upward from left to right. 
B) positive when the line slopes downward from left to right. 
C) negative when the line slopes upward from left to right. 
D) negative when the line slopes downward from right to left. 
A) positive when the line slopes upward from left to right. 
B) positive when the line slopes downward from left to right. 
C) negative when the line slopes upward from left to right. 
D) negative when the line slopes downward from right to left.

Question 5

In a study of the relationship between geographical mobility (number of times a person has changed residences)and number of friends,Pearson's r2 is reported as .40.Which of the following would be a correct interpretation?

Accepted Answer

A) Mobility explains 16% of the variation in number of friends. 
B) There is a strong positive relationship between number of friends and mobility. 
C) As mobility increases,number of friends decreases. 
D) Mobility explains 40% of the variation in number of friends. 
A) Mobility explains 16% of the variation in number of friends. 
B) There is a strong positive relationship between number of friends and mobility. 
C) As mobility increases,number of friends decreases. 
D) Mobility explains 40% of the variation in number of friends.

Question 6

One key assumption of correlation analysis is that the variables have an essentially ____ relationship.

Accepted Answer

A) linear 
B) non-linear 
C) curvilinear 
D) circular 
A) linear 
B) non-linear 
C) curvilinear 
D) circular

Question 7

If a = 5 and b = 10,what would the value of Y be when X = 100?

Accepted Answer

A) unknown,more information is needed 
B) 1000 
C) 1005 
D) 5001 
A) unknown,more information is needed 
B) 1000 
C) 1005 
D) 5001

Question 8

If the regression line showing the effect of education on income has a slope of 1000,

Accepted Answer

A) the variables are not related. 
B) every year of education increases income by 1000. 
C) every change in education increases income. 
D) the Y intercept would be 1.00. 
A) the variables are not related. 
B) every year of education increases income by 1000. 
C) every change in education increases income. 
D) the Y intercept would be 1.00.

Question 9

By convention,the independent variable is arrayed along the ____ in a scattergram.

Accepted Answer

A) vertical axis (the ordinate) 
B) regression line 
C) horizontal axis (the abscissa) 
D) calibration line 
A) vertical axis (the ordinate) 
B) regression line 
C) horizontal axis (the abscissa) 
D) calibration line

Question 10

When referring to interval-ratio variables,a commonly used synonym for association is

Accepted Answer

A) probability. 
B) predictability. 
C) correlation. 
D) causation. 
A) probability. 
B) predictability. 
C) correlation. 
D) causation.

Question 11

The amount of error in predicting Y that remains after X has been taken into account is

Accepted Answer

A) the unexplained variation of Y. 
B) r - 1.00. 
C) always zero. 
D) r. 
A) the unexplained variation of Y. 
B) r - 1.00. 
C) always zero. 
D) r.

Question 12

The coefficient of determination may be interpreted with a logic akin to

Accepted Answer

A) chi square. 
B) the standard deviation. 
C) PRE. 
D) bivariate tables. 
A) chi square. 
B) the standard deviation. 
C) PRE. 
D) bivariate tables.

Question 13

If a line is drawn through the conditional means of Y,the line will

Accepted Answer

A) always be perfectly linear. 
B) rarely be a perfectly straight line. 
C) always be parallel to the horizontal axis. 
D) always be parallel to the vertical axis. 
A) always be perfectly linear. 
B) rarely be a perfectly straight line. 
C) always be parallel to the horizontal axis. 
D) always be parallel to the vertical axis.

Question 14

If the regression line on a scattergram slopes upward from left to right,the relationship is

Accepted Answer

A) bivariate. 
B) strong. 
C) parallel. 
D) positive. 
A) bivariate. 
B) strong. 
C) parallel. 
D) positive.

Question 15

If the slope of a regression line is 1.5,then

Accepted Answer

A) for every unit of change in X there is a change of 1.5 units in Y. 
B) for every unit of change in Y there is a change of 1.5 in X. 
C) the score of each case is 1.5 times higher on Y than on X. 
D) Y causes X. 
A) for every unit of change in X there is a change of 1.5 units in Y. 
B) for every unit of change in Y there is a change of 1.5 in X. 
C) the score of each case is 1.5 times higher on Y than on X. 
D) Y causes X.

Question 16

A researcher reports a Pearson r of .57 between gender (female = 0,males = 1)and involvement in juvenile delinquency.Which of the following is an appropriate interpretation?

Accepted Answer

A) females are more delinquent 
B) there is no relationship between the variables 
C) delinquency increases as gender "increases" 
D) only males were delinquent 
A) females are more delinquent 
B) there is no relationship between the variables 
C) delinquency increases as gender "increases" 
D) only males were delinquent

Question 17

The slope (b)is an awkward measure of the strength of a relationship because

Accepted Answer

A) it varies from 0 to 1.00. 
B) it decreases in value as the relationship increases in strength. 
C) it can have a negative sign when the relationship is actually positive. 
D) its upper limit is greater than 1.00. 
A) it varies from 0 to 1.00. 
B) it decreases in value as the relationship increases in strength. 
C) it can have a negative sign when the relationship is actually positive. 
D) its upper limit is greater than 1.00.

Question 18

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 19

A researcher asked a sample of dual career families about the percentage of the family budget contributed by the wife's job (Y)and the total number of children (X).Pearson's r for this relationship is -0.34.Which of the following is an appropriate interpretation of these results?

Accepted Answer

A) For every dollar contributed by the wife,the number of children increases by .34. 
B) For every additional child,the wife must work longer hours. 
C) Every additional child lowers the economic wellbeing of the family. 
D) As number of children increase,the percentage of the budget contributed by the wife decreases. 
A) For every dollar contributed by the wife,the number of children increases by .34. 
B) For every additional child,the wife must work longer hours. 
C) Every additional child lowers the economic wellbeing of the family. 
D) As number of children increase,the percentage of the budget contributed by the wife decreases.

Question 20

A researcher wants to measure the strength of the association between income (measured in dollars per year)and education (measured in number of years of formal schooling).Which of the following would be the most appropriate measure of association?

Accepted Answer

A) the slope (b) 
B) gamma 
C) chi square 
D) Pearson's r 
A) the slope (b) 
B) gamma 
C) chi square 
D) Pearson's r

If a regression line is parallel to the horizontal axis of the scattergram,the slope (b)will be

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

Scattergrams do NOT give information about the ____ of a relationship.

The direction of a relationship between variables can be detected on a scattergram by considering the angle of the regression line.The relationship is

In a study of the relationship between geographical mobility (number of times a person has changed residences)and number of friends,Pearson's r2 is reported as .40.Which of the following would be a correct interpretation?

One key assumption of correlation analysis is that the variables have an essentially ____ relationship.

If a = 5 and b = 10,what would the value of Y be when X = 100?

If the regression line showing the effect of education on income has a slope of 1000,

By convention,the independent variable is arrayed along the ____ in a scattergram.

When referring to interval-ratio variables,a commonly used synonym for association is

The amount of error in predicting Y that remains after X has been taken into account is

The coefficient of determination may be interpreted with a logic akin to

If a line is drawn through the conditional means of Y,the line will

If the regression line on a scattergram slopes upward from left to right,the relationship is

If the slope of a regression line is 1.5,then

A researcher reports a Pearson r of .57 between gender (female = 0,males = 1)and involvement in juvenile delinquency.Which of the following is an appropriate interpretation?

The slope (b)is an awkward measure of the strength of a relationship because

In regression analysis,the symbol a stands for

A researcher asked a sample of dual career families about the percentage of the family budget contributed by the wife's job (Y)and the total number of children (X).Pearson's r for this relationship is -0.34.Which of the following is an appropriate interpretation of these results?

A researcher wants to measure the strength of the association between income (measured in dollars per year)and education (measured in number of years of formal schooling).Which of the following would be the most appropriate measure of association?

Introduction

Basic Descriptive Statistics: Percentages Ratios and Rates Frequency Distributions

Charts and Graphs

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction in Inferential Statistics, the Sampling Distribution, and Estimation

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

Introduction to Bivariate Association and Measures of Association for Variables Measured at the Nominal Level

Association Between Variables Measured at the Ordinal Level

Partial Correlation and Multiple Regression and Correlation

Filters

Exam 14: Association Between Variables Measured at the Interval-Ratio Level

If a regression line is parallel to the horizontal axis of the scattergram,the slope (b)will be

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

Scattergrams do NOT give information about the ____ of a relationship.

The direction of a relationship between variables can be detected on a scattergram by considering the angle of the regression line.The relationship is

In a study of the relationship between geographical mobility (number of times a person has changed residences)and number of friends,Pearson's r2 is reported as .40.Which of the following would be a correct interpretation?

One key assumption of correlation analysis is that the variables have an essentially ____ relationship.

If a = 5 and b = 10,what would the value of Y be when X = 100?

If the regression line showing the effect of education on income has a slope of 1000,

By convention,the independent variable is arrayed along the ____ in a scattergram.

When referring to interval-ratio variables,a commonly used synonym for association is

The amount of error in predicting Y that remains after X has been taken into account is

The coefficient of determination may be interpreted with a logic akin to

If a line is drawn through the conditional means of Y,the line will

If the regression line on a scattergram slopes upward from left to right,the relationship is

If the slope of a regression line is 1.5,then

A researcher reports a Pearson r of .57 between gender (female = 0,males = 1)and involvement in juvenile delinquency.Which of the following is an appropriate interpretation?

The slope (b)is an awkward measure of the strength of a relationship because

In regression analysis,the symbol a stands for

A researcher asked a sample of dual career families about the percentage of the family budget contributed by the wife's job (Y)and the total number of children (X).Pearson's r for this relationship is -0.34.Which of the following is an appropriate interpretation of these results?

A researcher wants to measure the strength of the association between income (measured in dollars per year)and education (measured in number of years of formal schooling).Which of the following would be the most appropriate measure of association?

Introduction

Basic Descriptive Statistics: Percentages Ratios and Rates Frequency Distributions

Charts and Graphs

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction in Inferential Statistics, the Sampling Distribution, and Estimation

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

Introduction to Bivariate Association and Measures of Association for Variables Measured at the Nominal Level

Association Between Variables Measured at the Ordinal Level

Partial Correlation and Multiple Regression and Correlation

Filters