Question 1

According to the Empirical Rule, 75% percent of the observations lie within plus and minus 2.00 average mean deviations.

Accepted Answer

A) True 
 B)False

Question 2

For a data set with an odd number of observations that have been sorted from smallest to largest values, where is the median located?

Accepted Answer

A)  n 
B)  n/2 
C)  (n + 1)/2 
D)  n + ½ 
A)  n 
B)  n/2 
C)  (n + 1)/2 
D)  n + ½

Question 3

What is the difference between the largest and the smallest values in a set of data? _________

Accepted Answer

The answer of What is the difference between the largest...

Question 4

The following are the weekly amounts of welfare payments made by the federal government to a sample of six families: $139, $136, $130, $136, $147 and $136. What is the range?

Accepted Answer

A)  $0 
B)  $14 
C)  $52 
D)  $17 
A)  $0 
B)  $14 
C)  $52 
D)  $17

Question 5

According to Chebyshev's Theorem, at least what percent of the observations lie within plus and minus 1.75 standard deviations of the mean?

Accepted Answer

A)  56% 
B)  95% 
C)  67% 
D)  Cannot compute because it depends on the shape of the distribution 
A)  56% 
B)  95% 
C)  67% 
D)  Cannot compute because it depends on the shape of the distribution

Question 6

Coastal Carolina University recently surveyed a sample of students to determine how far they lived from campus. The results are shown below. Compute the mean distance.

Accepted Answer

The answer of Coastal Carolina University recently surveyed a sample...

Question 7

A sample of the personnel files of eight male employees revealed that, during a six-month period, they lost the following number of days due to illness: 2, 0, 6, 3, 10, 4, 1 and 2. What is the mean deviation (in days)?

Accepted Answer

A)  1 
B)  0 
C)  3 1/8 
D)  2 3/8 
A)  1 
B)  0 
C)  3 1/8 
D)  2 3/8

Question 8

What are the similarities and differences between the mean, the median, and the mode?

Accepted Answer

Answers may vary but should include the

Question 9

The sum of the deviations from the mean for the set of numbers 4, 9 and 5 will equal zero.

Accepted Answer

A) True 
 B)False

Question 10

For any data set, Chebyshev's Theorem estimates the proportion of observations that occurs within k standard deviations of the mean, where k is greater than 1.0.

Accepted Answer

A) True 
 B)False

Question 11

If a distribution is highly skewed, what measure of central location should be avoided? ____________

Accepted Answer

The answer of If a distribution is highly skewed, what...

Question 12

The mode is the value of the observation that appears most frequently.

Accepted Answer

A) True 
 B)False

According to the Empirical Rule, 75% percent of the observations lie within plus and minus 2.00 average mean deviations.

For a data set with an odd number of observations that have been sorted from smallest to largest values, where is the median located?

What is the difference between the largest and the smallest values in a set of data? _________

The following are the weekly amounts of welfare payments made by the federal government to a sample of six families: $139, $136, $130, $136, $147 and $136. What is the range?

According to Chebyshev's Theorem, at least what percent of the observations lie within plus and minus 1.75 standard deviations of the mean?

Coastal Carolina University recently surveyed a sample of students to determine how far they lived from campus. The results are shown below. Compute the mean distance.

A sample of the personnel files of eight male employees revealed that, during a six-month period, they lost the following number of days due to illness: 2, 0, 6, 3, 10, 4, 1 and 2. What is the mean deviation (in days)?

What are the similarities and differences between the mean, the median, and the mode?

The sum of the deviations from the mean for the set of numbers 4, 9 and 5 will equal zero.

For any data set, Chebyshev's Theorem estimates the proportion of observations that occurs within k standard deviations of the mean, where k is greater than 1.0.

If a distribution is highly skewed, what measure of central location should be avoided? ____________

The mode is the value of the observation that appears most frequently.

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Index Numbers

Time Series and Forecasting

Nonparametric Methods: Goodness-Of-Fit Tests

Nonparametric Methods: Analysis of Ranked Data

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

Exam 3: Describing Data: Numerical Measures

According to the Empirical Rule, 75% percent of the observations lie within plus and minus 2.00 average mean deviations.

For a data set with an odd number of observations that have been sorted from smallest to largest values, where is the median located?

What is the difference between the largest and the smallest values in a set of data? _________

The following are the weekly amounts of welfare payments made by the federal government to a sample of six families: $139, $136, $130, $136, $147 and $136. What is the range?

According to Chebyshev's Theorem, at least what percent of the observations lie within plus and minus 1.75 standard deviations of the mean?

Coastal Carolina University recently surveyed a sample of students to determine how far they lived from campus. The results are shown below. Compute the mean distance.

A sample of the personnel files of eight male employees revealed that, during a six-month period, they lost the following number of days due to illness: 2, 0, 6, 3, 10, 4, 1 and 2. What is the mean deviation (in days)?

What are the similarities and differences between the mean, the median, and the mode?

The sum of the deviations from the mean for the set of numbers 4, 9 and 5 will equal zero.

For any data set, Chebyshev's Theorem estimates the proportion of observations that occurs within k standard deviations of the mean, where k is greater than 1.0.

If a distribution is highly skewed, what measure of central location should be avoided? ____________

The mode is the value of the observation that appears most frequently.

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Index Numbers

Time Series and Forecasting

Nonparametric Methods: Goodness-Of-Fit Tests

Nonparametric Methods: Analysis of Ranked Data

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters