Question 1

The mean is almost always inappropriate for describing the average of a highly skewed distribution. __________

Accepted Answer

A) True 
 B)False  True

Question 2

Which of the following is NOT true about the mean?

Accepted Answer

A)  Mean is the most frequently used average 
B)  It is the sum of the scores divided by the number of scores 
C)  Mean is the balance point in a distribution of scores 
D)  Mean measures the deviations of each score 
E)  It is the point around which all the deviations sum to zero 
A)  Mean is the most frequently used average 
B)  It is the sum of the scores divided by the number of scores 
C)  Mean is the balance point in a distribution of scores 
D)  Mean measures the deviations of each score 
E)  It is the point around which all the deviations sum to zero D

Question 3

What is the sum of deviations in the above data?

Accepted Answer

A)  0 
B)  33 
C)  5.5 
D)  -.5 
A)  0 
B)  33 
C)  5.5 
D)  -.5 A

Question 4

Compute the mean from the following set of scores. $\begin{array}{llllll}
5 & 4 & 7 & 3 & 9 & 5
\end{array}$

Accepted Answer

A)  33 
B)  5.5 
C)  55 
D)  4.5 
A)  33 
B)  5.5 
C)  55 
D)  4.5

Question 5

The mean is pulled in the direction of extreme scores. _________

Accepted Answer

A) True 
 B)False

Question 6

The mean is appropriate for use with any scales of measurements. _________

Accepted Answer

A) True 
 B)False

Question 7

To how many decimal places are the means reported in journals?

Accepted Answer

A)  One decimal place 
B)  Two decimal places 
C)  Three decimal places 
D)  Four decimal places 
A)  One decimal place 
B)  Two decimal places 
C)  Three decimal places 
D)  Four decimal places

The mean is almost always inappropriate for describing the average of a highly skewed distribution. __________

Which of the following is NOT true about the mean?

What is the sum of deviations in the above data?

Compute the mean from the following set of scores. 5 4 7 3 9 5

The mean is pulled in the direction of extreme scores. _________

The mean is appropriate for use with any scales of measurements. _________

To how many decimal places are the means reported in journals?

The Empirical Approach to Knowledge

Types of Empirical Research

Scales of Measurement

Descriptive, Correlational, and Inferential Statistics

Introduction to Sampling

Variations on Random Sampling

Sample Size

Standard Error of the Mean

Frequencies, Percentages, and Proportions

Shapes of Distributions

Mean, Median, and Mode

Range and Interquartile Range

Standard Deviation

Z-Score

Correlation

Pearson-R

Scattergram

Introduction to Hypothesis Testing

Decisions About the Null Hypothesis

Introduction to the T-Test

Independent Samples T-Test

Dependent Samples T-Test

One Sample T-Test

Reports of the Results of T-Tests

One-Way Anova

Two-Way Anova

Chi-Square Test

Limitations of Significance Testing

Effect Size

Coefficient of Determination

Multiple Correlation

Simple and Multiple Regression

Filters

Exam 11: The Mean: An Average

The mean is almost always inappropriate for describing the average of a highly skewed distribution. __________

Which of the following is NOT true about the mean?

What is the sum of deviations in the above data?

Compute the mean from the following set of scores. 5 4 7 3 9 5

The mean is pulled in the direction of extreme scores. _________

The mean is appropriate for use with any scales of measurements. _________

To how many decimal places are the means reported in journals?

The Empirical Approach to Knowledge

Types of Empirical Research

Scales of Measurement

Descriptive, Correlational, and Inferential Statistics

Introduction to Sampling

Variations on Random Sampling

Sample Size

Standard Error of the Mean

Frequencies, Percentages, and Proportions

Shapes of Distributions

Mean, Median, and Mode

Range and Interquartile Range

Standard Deviation

Z-Score

Correlation

Pearson-R

Scattergram

Introduction to Hypothesis Testing

Decisions About the Null Hypothesis

Introduction to the T-Test

Independent Samples T-Test

Dependent Samples T-Test

One Sample T-Test

Reports of the Results of T-Tests

One-Way Anova

Two-Way Anova

Chi-Square Test

Limitations of Significance Testing

Effect Size

Coefficient of Determination

Multiple Correlation

Simple and Multiple Regression

Filters