Question 1

standard deviation is the most frequently used measure of variability. ________

Accepted Answer

A) True 
 B)False  True

Question 2

What is the 68% range of the following data?
M = 6, S = 2.5

Accepted Answer

3.5 ~ 8.5

Question 3

Among the following, which word(s) does NOT associate with variability?

Accepted Answer

A)  Spread and dispersion 
B)  Mean 
C)  Standard deviation 
D)  Interquartile Range 
A)  Spread and dispersion 
B)  Mean 
C)  Standard deviation 
D)  Interquartile Range B

Question 4

Assuming all three groups of data have the same mean of 7 (M = 7), which group shows the highest variability? List them in the order of the highest variability to the lowest variability.

Accepted Answer

A) 	Group A: S = 5.42 
B) 	Group D: S = 1.34 
C) 	Group B: S = 5.01 
D) 	Group C: S = 0.00 
A) 	Group A: S = 5.42 
B) 	Group D: S = 1.34 
C) 	Group B: S = 5.01 
D) 	Group C: S = 0.00

Question 5

When reporting results, which of the following is NOT true?

Accepted Answer

A)  Report Mean and standard deviation together 
B)  Report Median and interquartile range together 
C)  Report Mean and interquartile range together 
D)  Report Mean and the 68% range together 
A)  Report Mean and standard deviation together 
B)  Report Median and interquartile range together 
C)  Report Mean and interquartile range together 
D)  Report Mean and the 68% range together

Question 6

What is NOT true about the above range?

Accepted Answer

A)  The 68% of the data lie within this range 
B)  About two-thirds of the cases lie within 2.5 points of the mean 
C)  Based on the mean and standard deviation the data shows a skewed distribution 
D)  The 68% of the cases lie in the middle area bounded by one standard deviation on each side 
E)  About two-thirds of the cases lie between scores of 3.5 and 8.5 
A)  The 68% of the data lie within this range 
B)  About two-thirds of the cases lie within 2.5 points of the mean 
C)  Based on the mean and standard deviation the data shows a skewed distribution 
D)  The 68% of the cases lie in the middle area bounded by one standard deviation on each side 
E)  About two-thirds of the cases lie between scores of 3.5 and 8.5

standard deviation is the most frequently used measure of variability. ________

What is the 68% range of the following data? M = 6, S = 2.5

Among the following, which word(s) does NOT associate with variability?

Assuming all three groups of data have the same mean of 7 (M = 7), which group shows the highest variability? List them in the order of the highest variability to the lowest variability.

When reporting results, which of the following is NOT true?

What is NOT true about the above range?

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

The Mean: An Average

Mean, Median, and Mode

Range and Interquartile Range

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 14: Standard Deviation

standard deviation is the most frequently used measure of variability. ________

What is the 68% range of the following data? M = 6, S = 2.5

Among the following, which word(s) does NOT associate with variability?

Assuming all three groups of data have the same mean of 7 (M = 7), which group shows the highest variability? List them in the order of the highest variability to the lowest variability.

When reporting results, which of the following is NOT true?

What is NOT true about the above range?

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

The Mean: An Average

Mean, Median, and Mode

Range and Interquartile Range

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