Question 1

In a hypothesis test, standard error measures ____.

Accepted Answer

A)  the size of the treatment effect 
B)  variability for the sample data 
C)  the likelihood of a Type I or Type II error 
D)  the amount of difference expected just by chance 
A)  the size of the treatment effect 
B)  variability for the sample data 
C)  the likelihood of a Type I or Type II error 
D)  the amount of difference expected just by chance

Question 2

Where is a score of X = 45 located in a distribution with a mean of 40 and a standard deviation of 12?

Accepted Answer

A)  Slightly above average 
B)  Far above average 
C)  Slightly below average 
D)  Far below average 
A)  Slightly above average 
B)  Far above average 
C)  Slightly below average 
D)  Far below average

Question 3

The median is the most commonly used measure of central tendency.

Accepted Answer

A) True 
 B)False

Question 4

A negative correlation means that as the X values decrease, the Y values also tend to decrease.

Accepted Answer

A) True 
 B)False

Question 5

A researcher reports a significant correlation using an alpha level of .01. The probability that the researcher is making a Type I error is p

Accepted Answer

A) True 
 B)False

Question 6

If a frequency distribution is shown in a bar graph, what scale was used to measure the scores?

Accepted Answer

A)  Nominal only 
B)  Nominal or ordinal 
C)  Ratio only 
D)  Interval or ratio 
A)  Nominal only 
B)  Nominal or ordinal 
C)  Ratio only 
D)  Interval or ratio

Question 7

A scatter plot shows data points that are widely scattered around a line that slopes down to the right. Which value would be closest to the correlation for these data?

Accepted Answer

A)  80 
B)  40 
C)  .40 
D)  .80 
A)  80 
B)  40 
C)  .40 
D)  .80

In a hypothesis test, standard error measures ____.

Where is a score of X = 45 located in a distribution with a mean of 40 and a standard deviation of 12?

The median is the most commonly used measure of central tendency.

A negative correlation means that as the X values decrease, the Y values also tend to decrease.

A researcher reports a significant correlation using an alpha level of .01. The probability that the researcher is making a Type I error is p

If a frequency distribution is shown in a bar graph, what scale was used to measure the scores?

A scatter plot shows data points that are widely scattered around a line that slopes down to the right. Which value would be closest to the correlation for these data?

Introduction, Acquiring Knowledge, and the Scientific Method

Research Ideas and Hypotheses

Defining and Measuring Variables

Ethics in Research

Selecting Research Participants

Research Strategies and Validity

The Experimental Research Strategy

Experimental Designs: Between-Subjects Design

Experimental Designs: Within-Subjects Design

The Nonexperimental and Quasi-Experimental Strategies: Nonequivalent Group, Prepost, and Developmental Designs

Factorial Designs

The Correlational Research Strategy

The Descriptive Research Strategy

Single-Case Experimental Research Designs

Writing an Apa-Style Research Report

Filters

Exam 15: Statistical Evaluation of Data

In a hypothesis test, standard error measures ____.

Where is a score of X = 45 located in a distribution with a mean of 40 and a standard deviation of 12?

The median is the most commonly used measure of central tendency.

A negative correlation means that as the X values decrease, the Y values also tend to decrease.

A researcher reports a significant correlation using an alpha level of .01. The probability that the researcher is making a Type I error is p

If a frequency distribution is shown in a bar graph, what scale was used to measure the scores?

A scatter plot shows data points that are widely scattered around a line that slopes down to the right. Which value would be closest to the correlation for these data?

Introduction, Acquiring Knowledge, and the Scientific Method

Research Ideas and Hypotheses

Defining and Measuring Variables

Ethics in Research

Selecting Research Participants

Research Strategies and Validity

The Experimental Research Strategy

Experimental Designs: Between-Subjects Design

Experimental Designs: Within-Subjects Design

The Nonexperimental and Quasi-Experimental Strategies: Nonequivalent Group, Prepost, and Developmental Designs

Factorial Designs

The Correlational Research Strategy

The Descriptive Research Strategy

Single-Case Experimental Research Designs

Writing an Apa-Style Research Report

Filters