Question 1

Can the measures of central tendency and the measures of variability be used together to describe a set of scores? If so,how?

Accepted Answer

Yes,the measures of central tendency and

Question 2

What are the strengths and limitations of the range?

Accepted Answer

The range is the most general estimate o

Question 3

The absolute value of a number is represented by which of the following?

Accepted Answer

A) ±5 
B) +5 
C) |5| 
D) /5/ 
A) ±5 
B) +5 
C) |5| 
D) /5/

Question 4

The sum of the deviations from the mean will always be equal to ______.

Accepted Answer

A) 0 
B) 0. 
C) n - 1 
D) n + 1 
A) 0 
B) 0. 
C) n - 1 
D) n + 1

Question 5

What is the range for the following set of scores: 117,249,326,47,442?

Accepted Answer

A) 117 
B) 395 
C) 326 
D) 442 
A) 117 
B) 395 
C) 326 
D) 442

Question 6

What is the difference between the inclusive and exclusive range?

Accepted Answer

The inclusive range is the hig

Question 7

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

Accepted Answer

A) range 
B) variability 
C) highest score 
D) lowest score 
A) range 
B) variability 
C) highest score 
D) lowest score

Question 8

When calculating the standard deviation,what must be done in order to obtain an unbiased estimate?

Accepted Answer

A) subtract 1 from X 
B) add 1 to X 
C) subtract 1 from n 
D) add 1 to n 
A) subtract 1 from X 
B) add 1 to X 
C) subtract 1 from n 
D) add 1 to n

Question 9

What are the three tools used to assess variability?

Accepted Answer

A) range,standard deviation,and variance 
B) mean,median,and mode 
C) variance,range,and mean 
D) mean,standard deviation,and skewness 
A) range,standard deviation,and variance 
B) mean,median,and mode 
C) variance,range,and mean 
D) mean,standard deviation,and skewness

Question 10

Biased estimates are appropriate ______.

Accepted Answer

A) to describe a sample 
B) to describe a population 
C) to describe a sample or a population 
D) none of these 
A) to describe a sample 
B) to describe a population 
C) to describe a sample or a population 
D) none of these

Question 11

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

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 12

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

Accepted Answer

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

Question 13

What is the standard deviation squared?

Accepted Answer

A) range 
B) mean deviation 
C) variance 
D) This cannot be computed. 
A) range 
B) mean deviation 
C) variance 
D) This cannot be computed.

Question 14

What is the most common measure of variability?

Accepted Answer

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

Question 15

What is the formula for calculating the inclusive range?

Accepted Answer

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

Question 16

What is the range for the following set of scores: 29,48,22,37,55?

Accepted Answer

A) 26 
B) 33 
C) 37 
D) 55 
A) 26 
B) 33 
C) 37 
D) 55

Question 17

If you know the standard deviation,what is the quick way to compute the variance?

Accepted Answer

You can square the s

Question 18

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

Accepted Answer

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

Question 19

What is obtained by taking the square root of the variance?

Accepted Answer

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

Question 20

A standard deviation equal to 0 indicates no variance in your data.

Accepted Answer

A) True 
 B)False

Can the measures of central tendency and the measures of variability be used together to describe a set of scores? If so,how?

What are the strengths and limitations of the range?

The absolute value of a number is represented by which of the following?

The sum of the deviations from the mean will always be equal to ______.

What is the range for the following set of scores: 117,249,326,47,442?

What is the difference between the inclusive and exclusive range?

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

When calculating the standard deviation,what must be done in order to obtain an unbiased estimate?

What are the three tools used to assess variability?

Biased estimates are appropriate ______.

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

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

What is the standard deviation squared?

What is the most common measure of variability?

What is the formula for calculating the inclusive range?

What is the range for the following set of scores: 29,48,22,37,55?

If you know the standard deviation,what is the quick way to compute the variance?

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

What is obtained by taking the square root of the variance?

A standard deviation equal to 0 indicates no variance in your data.

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

Can the measures of central tendency and the measures of variability be used together to describe a set of scores? If so,how?

What are the strengths and limitations of the range?

The absolute value of a number is represented by which of the following?

The sum of the deviations from the mean will always be equal to ______.

What is the range for the following set of scores: 117,249,326,47,442?

What is the difference between the inclusive and exclusive range?

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

When calculating the standard deviation,what must be done in order to obtain an unbiased estimate?

What are the three tools used to assess variability?

Biased estimates are appropriate ______.

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

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

What is the standard deviation squared?

What is the most common measure of variability?

What is the formula for calculating the inclusive range?

What is the range for the following set of scores: 29,48,22,37,55?

If you know the standard deviation,what is the quick way to compute the variance?

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

What is obtained by taking the square root of the variance?

A standard deviation equal to 0 indicates no variance in your data.

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?