Question 1

What is the mean for the following set of scores: 20,24,26,22,18,16,18?

Accepted Answer

A) 18 
B) 24 
C) 20.57 
D) 14.57 
A) 18 
B) 24 
C) 20.57 
D) 14.57

Question 2

If Σ(X - M)2 = 235,and n = 29,what is s?

Accepted Answer

A) 11.3 
B) 23.5 
C) 8.39 
D) 2.90 
A) 11.3 
B) 23.5 
C) 8.39 
D) 2.90

Question 3

The highest score minus the lowest score is equal to the ______.

Accepted Answer

A) standard deviation 
B) inclusive range 
C) exclusive range 
D) variance 
A) standard deviation 
B) inclusive range 
C) exclusive range 
D) variance

Question 4

Unbiased estimates are considered to be less conservative estimates.

Accepted Answer

A) True 
 B)False

Question 5

What is another term for variability?

Accepted Answer

A) flux or variation 
B) scattergram 
C) skewness 
D) spread or dispersion 
A) flux or variation 
B) scattergram 
C) skewness 
D) spread or dispersion

Question 6

What are the three measures of variability? Which is the most commonly reported?

Accepted Answer

The three measures of variabil

Question 7

All of the following are measures of variability EXCEPT ______.

Accepted Answer

A) mean 
B) standard deviation 
C) variance 
D) range 
A) mean 
B) standard deviation 
C) variance 
D) range

Question 8

If you have a standard deviation of 5,your variance will be ______.

Accepted Answer

A) 4 
B) 25 
C) 5 
D) 625 
A) 4 
B) 25 
C) 5 
D) 625

Question 9

What is the variance for the following set of scores: 10,15,12,18,19,16,12?

Accepted Answer

A) 3.36 
B) 11.29 
C) 6.47 
D) 17.18 
A) 3.36 
B) 11.29 
C) 6.47 
D) 17.18

Question 10

Which of the following is one way to represent the standard deviation?

Accepted Answer

A) s 
B) s2 
C) s(2) 
D) s / n 
A) s 
B) s2 
C) s(2) 
D) s / n

Question 11

Which measure of variability is most general and,hence,least useful?

Accepted Answer

A) median 
B) range 
C) standard deviation 
D) mean deviation 
A) median 
B) range 
C) standard deviation 
D) mean deviation

Question 12

Variance is an easy number to interpret.

Accepted Answer

A) True 
 B)False

Question 13

Unbiased estimates ______.

Accepted Answer

A) are less conservative estimates of sample statistics 
B) are more conservative estimates of sample statistics 
C) are less conservative estimates of population parameters 
D) are more conservative estimates of population parameters 
A) are less conservative estimates of sample statistics 
B) are more conservative estimates of sample statistics 
C) are less conservative estimates of population parameters 
D) are more conservative estimates of population parameters

Question 14

Which measure of variability should never be used alone to reach conclusions regarding the variance of a distribution?

Accepted Answer

A) standard deviation 
B) mode 
C) variance 
D) range 
A) standard deviation 
B) mode 
C) variance 
D) range

Question 15

In the formula for computing the range,______ is used to represent the range.

Accepted Answer

A) rho 
B) Ran 
C) r 
D) rhi 
A) rho 
B) Ran 
C) r 
D) rhi

Question 16

If you subtract the smallest number in the distribution from the largest,what type of variability is being calculated?

Accepted Answer

A) variance 
B) range 
C) outliers 
D) standard deviation 
A) variance 
B) range 
C) outliers 
D) standard deviation

Question 17

Why is the square root taken when computing s?

Accepted Answer

In order to compute the standard deviati

Question 18

What is the formula for calculating the exclusive range?

Accepted Answer

A) r - n + 1 
B) h - l + 1 
C) (h - 1)r 
D) h - 1 
A) r - n + 1 
B) h - l + 1 
C) (h - 1)r 
D) h - 1

Question 19

Which measure of variability is easiest to calculate?

Accepted Answer

A) standard deviation 
B) mode 
C) range 
D) variance 
A) standard deviation 
B) mode 
C) range 
D) variance

Question 20

It is impossible for a set of data to have no variability.

Accepted Answer

A) True 
 B)False

What is the mean for the following set of scores: 20,24,26,22,18,16,18?

If Σ(X - M)² = 235,and n = 29,what is s?

The highest score minus the lowest score is equal to the ______.

Unbiased estimates are considered to be less conservative estimates.

What is another term for variability?

What are the three measures of variability? Which is the most commonly reported?

All of the following are measures of variability EXCEPT ______.

If you have a standard deviation of 5,your variance will be ______.

What is the variance for the following set of scores: 10,15,12,18,19,16,12?

Which of the following is one way to represent the standard deviation?

Which measure of variability is most general and,hence,least useful?

Variance is an easy number to interpret.

Unbiased estimates ______.

Which measure of variability should never be used alone to reach conclusions regarding the variance of a distribution?

In the formula for computing the range,______ is used to represent the range.

If you subtract the smallest number in the distribution from the largest,what type of variability is being calculated?

Why is the square root taken when computing s?

What is the formula for calculating the exclusive range?

Which measure of variability is easiest to calculate?

It is impossible for a set of data to have no variability.

Statistics or Sadistics Its up to You

Means to an End: Computing and Understanding Averages

A Picture Really Is Worth a Thousand Words

Computing Correlation Coefficients: Ice Cream and Crime

Understanding Reliability and Validity: Just the Truth

Hypotheticals and You: Testing Your Questions

Probability and Why It Counts: Fun With a Bell-Shaped Curve

Significantly Significant: What It Means for You and Me

Only the Lonely: the One Sample Z-Test

Teafor Two: Tests Between the Means of Different Groups

Teafor Two Again: Tests Between the Means of Related Groups

Two Groups Too Many Try Analysis of Variance

Two Too Many Factors: Factorial Analysis of Variancea Brief Introduction

Testing Relationships Using the Correlation Coefficients: Cousins or Just Good Friends

Using Linear Regression: Predicting Wholl Win the Super Bowl

Chi-Square and Some Other Nonparametric Tests: What to Do When Youre Not Normal

Some Other Importantstatistical Procedures You Should Know About

An Introduction to Data Mining

Filters

Exam 3: Understanding Variability: Vive La Différence

What is the mean for the following set of scores: 20,24,26,22,18,16,18?

If Σ(X - M)2 = 235,and n = 29,what is s?

The highest score minus the lowest score is equal to the ______.

Unbiased estimates are considered to be less conservative estimates.

What is another term for variability?

What are the three measures of variability? Which is the most commonly reported?

All of the following are measures of variability EXCEPT ______.

If you have a standard deviation of 5,your variance will be ______.

What is the variance for the following set of scores: 10,15,12,18,19,16,12?

Which of the following is one way to represent the standard deviation?

Which measure of variability is most general and,hence,least useful?

Variance is an easy number to interpret.

Unbiased estimates ______.

Which measure of variability should never be used alone to reach conclusions regarding the variance of a distribution?

In the formula for computing the range,______ is used to represent the range.

If you subtract the smallest number in the distribution from the largest,what type of variability is being calculated?

Why is the square root taken when computing s?

What is the formula for calculating the exclusive range?

Which measure of variability is easiest to calculate?

It is impossible for a set of data to have no variability.

Statistics or Sadistics Its up to You

Means to an End: Computing and Understanding Averages

A Picture Really Is Worth a Thousand Words

Computing Correlation Coefficients: Ice Cream and Crime

Understanding Reliability and Validity: Just the Truth

Hypotheticals and You: Testing Your Questions

Probability and Why It Counts: Fun With a Bell-Shaped Curve

Significantly Significant: What It Means for You and Me

Only the Lonely: the One Sample Z-Test

Teafor Two: Tests Between the Means of Different Groups

Teafor Two Again: Tests Between the Means of Related Groups

Two Groups Too Many Try Analysis of Variance

Two Too Many Factors: Factorial Analysis of Variancea Brief Introduction

Testing Relationships Using the Correlation Coefficients: Cousins or Just Good Friends

Using Linear Regression: Predicting Wholl Win the Super Bowl

Chi-Square and Some Other Nonparametric Tests: What to Do When Youre Not Normal

Some Other Importantstatistical Procedures You Should Know About

An Introduction to Data Mining

Filters

If Σ(X - M)² = 235,and n = 29,what is s?