Question 1

If you have a lowest score of 21 and a range of 47,your highest score will be ______.

Accepted Answer

A) 26 
B) 21 
C) 47 
D) 68 
A) 26 
B) 21 
C) 47 
D) 68 D

Question 2

In order to calculate the variance,which of the following must you know?

Accepted Answer

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

Question 3

Which of the following sets of scores has the least variability?

Accepted Answer

A) 5,4,5,6,5 
B) 7,2,8,9,4 
C) 12,14,17,19,21 
D) 1,2,1,7,9 
A) 5,4,5,6,5 
B) 7,2,8,9,4 
C) 12,14,17,19,21 
D) 1,2,1,7,9 A

Question 4

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

Accepted Answer

A) 12.95 
B) 3.60 
C) 6.55 
D) 24 
A) 12.95 
B) 3.60 
C) 6.55 
D) 24

Question 5

The exclusive range is more commonly used in research articles when compared to the inclusive range.

Accepted Answer

A) True 
 B)False

Question 6

As your sample size grows larger,the n - 1 adjustment for the standard deviation has a ______.

Accepted Answer

A) greater impact on your calculation 
B) smaller impact on your calculation 
C) the impact does not vary 
D) this cannot be determined 
A) greater impact on your calculation 
B) smaller impact on your calculation 
C) the impact does not vary 
D) this cannot be determined

Question 7

Which of the following measures how scores differ from each other?

Accepted Answer

A) skewness 
B) kurtosis 
C) average 
D) variability 
A) skewness 
B) kurtosis 
C) average 
D) variability

Question 8

When reporting descriptive data such as the mean,what additional information should also be reported that expresses how different the scores are in the distribution?

Accepted Answer

A) variability 
B) outlier 
C) skew 
D) percentile 
A) variability 
B) outlier 
C) skew 
D) percentile

Question 9

What is the standard deviation 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) 17.78 
A) 3.36 
B) 11.29 
C) 6.47 
D) 17.78

Question 10

Which of the following must also be known in order to compute the standard deviation?

Accepted Answer

A) mode 
B) mean 
C) range 
D) median 
A) mode 
B) mean 
C) range 
D) median

Question 11

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

Accepted Answer

A) 7 
B) 8 
C) 9 
D) 10 
A) 7 
B) 8 
C) 9 
D) 10

Question 12

In the formula for calculating the standard deviation,what does the letter n represent?

Accepted Answer

A) summation 
B) sample size 
C) mean score for group 
D) individual score 
A) summation 
B) sample size 
C) mean score for group 
D) individual score

Question 13

The sum of the absolute value of the deviations from the mean divided by the number of scores is equal to the ______.

Accepted Answer

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

Question 14

When computing standard deviation,why are the deviations from the mean squared?

Accepted Answer

In order to compute the standard deviati

Question 15

In order to calculate the standard deviation,what must you first compute?

Accepted Answer

A) mean 
B) range 
C) median 
D) mode 
A) mean 
B) range 
C) median 
D) mode

Question 16

In the formula for computing the range,what does the letter h represent?

Accepted Answer

A) summation 
B) sample size 
C) highest score 
D) lowest score 
A) summation 
B) sample size 
C) highest score 
D) lowest score

Question 17

If Σ(X - M)2 = 235,and n = 29,what is s2?

Accepted Answer

A) 8.10 
B) 8.39 
C) 2.90 
D) 43.64 
A) 8.10 
B) 8.39 
C) 2.90 
D) 43.64

Question 18

Both the standard deviation and the variance are measures of variability,also called dispersion or spread.

Accepted Answer

A) True 
 B)False

Question 19

Unbiased estimates ______.

Accepted Answer

A) subtract 1 from the sample size 
B) add 1 to the sample size 
C) do not change the sample size 
D) multiply the sample size by 1 
A) subtract 1 from the sample size 
B) add 1 to the sample size 
C) do not change the sample size 
D) multiply the sample size by 1

Question 20

The variance is more difficult to interpret than the standard deviation.

Accepted Answer

A) True 
 B)False

If you have a lowest score of 21 and a range of 47,your highest score will be ______.

In order to calculate the variance,which of the following must you know?

Which of the following sets of scores has the least variability?

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

The exclusive range is more commonly used in research articles when compared to the inclusive range.

As your sample size grows larger,the n - 1 adjustment for the standard deviation has a ______.

Which of the following measures how scores differ from each other?

When reporting descriptive data such as the mean,what additional information should also be reported that expresses how different the scores are in the distribution?

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

Which of the following must also be known in order to compute the standard deviation?

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

In the formula for calculating the standard deviation,what does the letter n represent?

The sum of the absolute value of the deviations from the mean divided by the number of scores is equal to the ______.

When computing standard deviation,why are the deviations from the mean squared?

In order to calculate the standard deviation,what must you first compute?

In the formula for computing the range,what does the letter h represent?

If Σ(X - M)² = 235,and n = 29,what is s²?

Both the standard deviation and the variance are measures of variability,also called dispersion or spread.

Unbiased estimates ______.

The variance is more difficult to interpret than the standard deviation.

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

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Exam 3: Understanding Variability: Vive La Différence

If you have a lowest score of 21 and a range of 47,your highest score will be ______.

In order to calculate the variance,which of the following must you know?

Which of the following sets of scores has the least variability?

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

The exclusive range is more commonly used in research articles when compared to the inclusive range.

As your sample size grows larger,the n - 1 adjustment for the standard deviation has a ______.

Which of the following measures how scores differ from each other?

When reporting descriptive data such as the mean,what additional information should also be reported that expresses how different the scores are in the distribution?

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

Which of the following must also be known in order to compute the standard deviation?

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

In the formula for calculating the standard deviation,what does the letter n represent?

The sum of the absolute value of the deviations from the mean divided by the number of scores is equal to the ______.

When computing standard deviation,why are the deviations from the mean squared?

In order to calculate the standard deviation,what must you first compute?

In the formula for computing the range,what does the letter h represent?

If Σ(X - M)2 = 235,and n = 29,what is s2?

Both the standard deviation and the variance are measures of variability,also called dispersion or spread.

Unbiased estimates ______.

The variance is more difficult to interpret than the standard deviation.

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 s²?