Question 1

The relationship between the mean and median in a negatively skewed distribution would be that the _____________.

Accepted Answer

mean is le

Question 2

What is the relationship among the mean, median, and mode in a symmetric distribution?

Accepted Answer

A)  They are all equal. 
B)  The mean is always the smallest value. 
C)  The mean is always the largest value. 
D)  The mode is the largest value. 
A)  They are all equal. 
B)  The mean is always the smallest value. 
C)  The mean is always the largest value. 
D)  The mode is the largest value.

Question 3

For the past week, a company's common stock closed with the following prices: $61.5, $62, $61.25, $60.875, and $61.5. What was the price range?

Accepted Answer

A)  $1.250 
B)  $1.750 
C)  $1.125 
D)  $1.875 
A)  $1.250 
B)  $1.750 
C)  $1.125 
D)  $1.875

Question 4

When computing the mean for grouped data, the numerator is the sum of _________.

Accepted Answer

the produc

Question 5

The variance of a sample of 121 observations equals 441. The standard deviation of the sample equals

Accepted Answer

A)  11. 
B)  21. 
C)  1.91. 
D)  231. 
A)  11. 
B)  21. 
C)  1.91. 
D)  231.

Question 6

For a sample of similar sized all-electric homes, the March electric bills were (to the nearest dollar): $212, $191, $176, $129, $106, $92, $108, $109, $103, $121, $175, and $194. What is the range?

Accepted Answer

A)  $100 
B)  $130 
C)  $120 
D)  $112 
A)  $100 
B)  $130 
C)  $120 
D)  $112

Question 7

Assume a student received the following grades for the semester: History, B; Statistics, A; Spanish, C; and English,C. History and English are 5 credit-hour courses, Statistics a 4 credit-hour course, and Spanish is a 3 credit-hour course. If 4 grade points are assigned for an A, 3 for a B, and 2 for a C, what is the weighted mean grade for the semester?

Accepted Answer

A)  4.00 
B)  1.96 
C)  2.76 
D) 
3)01 
A)  4.00 
B)  1.96 
C)  2.76 
D) 
3)01

Question 8

A sample of five full-service gasoline stations, each carrying three grades of gasoline, was taken, and the price per liter (to the nearest cent) was recorded for each grade of gasoline, as shown in the following table.   What is the mean price of super unleaded gas?

Accepted Answer

$2.52
Explanation: To find the

Question 9

A sample of five full-service gasoline stations, each carrying three grades of gasoline, was taken, and the price per liter (to the nearest cent) was recorded for each grade of gasoline, as shown in the following table.   What is the modal price of unleaded gas?

Accepted Answer

$2.27
Explanation: T

Question 10

A company's human resources department was interested in the average number of years that a person works before retiring. The sample of size 11 follows:   Based on the values of the arithmetic mean, median, and mode, what is the most likely shape of the distribution?

Accepted Answer

Symmetric
Explanation: The distribution

Question 11

The U.S. Federal Aviation Administration reported that passenger revenues on international flights increased from $528 million in 1986 to $5,100 million in 2009. What is the geometric mean annual percent increase in international passenger revenues?

Accepted Answer

A)  10.4 
B)  27.9 
C)  103.6 
D)  9.96 
A)  10.4 
B)  27.9 
C)  103.6 
D)  9.96

Question 12

The variance is the mean of the sum of the squared deviations between each observation and the median.

Accepted Answer

A) True 
 B)False

Question 13

A geometric mean is useful to compute the average percent change over _______.

Accepted Answer

The answer of A geometric mean is useful to compute...

Question 14

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 15

The sum of the deviations of each value from the mean is ___.

Accepted Answer

The answer of The sum of the deviations of each...

Question 16

Variation describes the degree of dispersion in the data.

Accepted Answer

A) True 
 B)False

Question 17

A sample of five full-service gasoline stations, each carrying three grades of gasoline, was taken, and the price per liter (to the nearest cent) was recorded for each grade of gasoline, as shown in the following table.   What is the modal price of unleaded plus gas?

Accepted Answer

It has no unique val

Question 18

A sample of single persons receiving Social Security payments revealed these monthly benefits: $826, $699, $1,087, $880, $839, and $965. How many observations are below the median?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  3.5 
A)  1 
B)  2 
C)  3 
D)  3.5

Question 19

If a distribution is highly skewed, the measure of central location called the ________ should be avoided.

Accepted Answer

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

Question 20

Over the last six months, the following numbers of absences have been reported: 6, 0, 10, 14, 8, and 0. What is the median number of monthly absences?

Accepted Answer

A)  6 
B)  7 
C)  8 
D)  3 
A)  6 
B)  7 
C)  8 
D)  3

The relationship between the mean and median in a negatively skewed distribution would be that the _____________.

What is the relationship among the mean, median, and mode in a symmetric distribution?

For the past week, a company's common stock closed with the following prices: $61.5, $62, $61.25, $60.875, and $61.5. What was the price range?

When computing the mean for grouped data, the numerator is the sum of _________.

The variance of a sample of 121 observations equals 441. The standard deviation of the sample equals

For a sample of similar sized all-electric homes, the March electric bills were (to the nearest dollar): $212, $191, $176, $129, $106, $92, $108, $109, $103, $121, $175, and $194. What is the range?

A sample of five full-service gasoline stations, each carrying three grades of gasoline, was taken, and the price per liter (to the nearest cent) was recorded for each grade of gasoline, as shown in the following table. What is the mean price of super unleaded gas?

A sample of five full-service gasoline stations, each carrying three grades of gasoline, was taken, and the price per liter (to the nearest cent) was recorded for each grade of gasoline, as shown in the following table. What is the modal price of unleaded gas?

A company's human resources department was interested in the average number of years that a person works before retiring. The sample of size 11 follows: Based on the values of the arithmetic mean, median, and mode, what is the most likely shape of the distribution?

The U.S. Federal Aviation Administration reported that passenger revenues on international flights increased from $528 million in 1986 to $5,100 million in 2009. What is the geometric mean annual percent increase in international passenger revenues?

The variance is the mean of the sum of the squared deviations between each observation and the median.

A geometric mean is useful to compute the average percent change over _______.

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.

The sum of the deviations of each value from the mean is ___.

Variation describes the degree of dispersion in the data.

A sample of five full-service gasoline stations, each carrying three grades of gasoline, was taken, and the price per liter (to the nearest cent) was recorded for each grade of gasoline, as shown in the following table. What is the modal price of unleaded plus gas?

A sample of single persons receiving Social Security payments revealed these monthly benefits: $826, $699, $1,087, $880, $839, and $965. How many observations are below the median?

If a distribution is highly skewed, the measure of central location called the ________ should be avoided.

Over the last six months, the following numbers of absences have been reported: 6, 0, 10, 14, 8, and 0. What is the median number of monthly absences?

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

Nonparametric Methods: Nominal Level Hypothesis Tests

Nonparametric Methods: Analysis of Ordinal Data

Index Numbers

Time Series and Forecasting

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

Exam 3: Describing Data: Numerical Measures

The relationship between the mean and median in a negatively skewed distribution would be that the _____________.

What is the relationship among the mean, median, and mode in a symmetric distribution?

For the past week, a company's common stock closed with the following prices: $61.5, $62, $61.25, $60.875, and $61.5. What was the price range?

When computing the mean for grouped data, the numerator is the sum of _________.

The variance of a sample of 121 observations equals 441. The standard deviation of the sample equals

For a sample of similar sized all-electric homes, the March electric bills were (to the nearest dollar): $212, $191, $176, $129, $106, $92, $108, $109, $103, $121, $175, and $194. What is the range?

A sample of five full-service gasoline stations, each carrying three grades of gasoline, was taken, and the price per liter (to the nearest cent) was recorded for each grade of gasoline, as shown in the following table. What is the mean price of super unleaded gas?

A sample of five full-service gasoline stations, each carrying three grades of gasoline, was taken, and the price per liter (to the nearest cent) was recorded for each grade of gasoline, as shown in the following table. What is the modal price of unleaded gas?

A company's human resources department was interested in the average number of years that a person works before retiring. The sample of size 11 follows: Based on the values of the arithmetic mean, median, and mode, what is the most likely shape of the distribution?

The U.S. Federal Aviation Administration reported that passenger revenues on international flights increased from $528 million in 1986 to $5,100 million in 2009. What is the geometric mean annual percent increase in international passenger revenues?

The variance is the mean of the sum of the squared deviations between each observation and the median.

A geometric mean is useful to compute the average percent change over _______.

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.

The sum of the deviations of each value from the mean is ___.

Variation describes the degree of dispersion in the data.

A sample of five full-service gasoline stations, each carrying three grades of gasoline, was taken, and the price per liter (to the nearest cent) was recorded for each grade of gasoline, as shown in the following table. What is the modal price of unleaded plus gas?

A sample of single persons receiving Social Security payments revealed these monthly benefits: $826, $699, $1,087, $880, $839, and $965. How many observations are below the median?

If a distribution is highly skewed, the measure of central location called the ________ should be avoided.

Over the last six months, the following numbers of absences have been reported: 6, 0, 10, 14, 8, and 0. What is the median number of monthly absences?

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

Nonparametric Methods: Nominal Level Hypothesis Tests

Nonparametric Methods: Analysis of Ordinal Data

Index Numbers

Time Series and Forecasting

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters