Question 1

The arithmetic mean is the sum of the quantitative observations divided by the total number of observations.

Accepted Answer

A) True 
 B)False

Question 2

For a data set with an odd number of observations that have been sorted or arrayed 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

The sum of the deviations of each data value from this measure of central location will always be zero.

Accepted Answer

A) Mode 
B) Mean 
C) Median 
D) Standard deviation 
A) Mode 
B) Mean 
C) Median 
D) Standard deviation

Question 4

The weights (in kilograms)of a group of crates being shipped to Panama are 95,103,110,104,105,112 and 92.What is the mean deviation?

Accepted Answer

A) 5.43 kg 
B) 6.25 kg 
C) 0.53 kg 
D) 52.50 kg 
A) 5.43 kg 
B) 6.25 kg 
C) 0.53 kg 
D) 52.50 kg

Question 5

The U.S.Department of Education reported that for the past seven years 4,033,5,652,6,407,7,201,8,719,11,154,and 15,121 people received bachelor's degrees in computer and information sciences.What is the annual arithmetic mean number of degrees awarded?

Accepted Answer

A) About 12,240 
B) About 8,327 
C) About 6,217 
D) About 15,962 
A) About 12,240 
B) About 8,327 
C) About 6,217 
D) About 15,962

Question 6

When is the only time the variance equals the standard deviation? ________________

Accepted Answer

The answer of When is the only time the variance...

Question 7

For any data set,which measures of central location have only one value?

Accepted Answer

A) Mode and median 
B) Mode and mean 
C) Mode and standard deviation 
D) Mean and median 
A) Mode and median 
B) Mode and mean 
C) Mode and standard deviation 
D) Mean and median

Question 8

Extremely high or low scores affect the value of the median.

Accepted Answer

A) True 
 B)False

Question 9

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 10

Sometimes,data has two values that have the highest and equal frequencies.In this case,the distribution of the data can best be summarized as

Accepted Answer

A) symmetric 
B) bimodal (having two modes) 
C) positively skewed 
D) negatively skewed 
A) symmetric 
B) bimodal (having two modes) 
C) positively skewed 
D) negatively skewed

Question 11

For a symmetrical distribution,the variance is equal to the standard deviation.

Accepted Answer

A) True 
 B)False

Question 12

If a set of observations contains an extreme value and none of the observations repeat themselves,what is the most representative measure of central location? _____________

Accepted Answer

The answer of If a set of observations contains an...

Question 13

What is the positive square root of the variation? _________.

Accepted Answer

The answer of What is the positive square root of...

Question 14

The net incomes (in $ millions)of a sample of steel fabricators are: $86,$67,$86 and $85.What is the modal net income?

Accepted Answer

A) $67 
B) $85 
C) $85.5 
D) $86 
A) $67 
B) $85 
C) $85.5 
D) $86

Question 15

The median can be determined for any set of interval-level data.

Accepted Answer

A) True 
 B)False

Question 16

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 table below.   For Super Unleaded gas,which measure of central location would be the highest? _____________.

Accepted Answer

The answer of A sample of five full service gasoline...

Question 17

The weights (in grams)of the contents of several small bottles are 4,2,5,4,5,2 and 6.What is the sample variance?

Accepted Answer

A) 6.92 
B) 4.80 
C) 1.96 
D) 2.33 
A) 6.92 
B) 4.80 
C) 1.96 
D) 2.33

Question 18

A value that is typical or representative of the data is referred to as a measure of central location.

Accepted Answer

A) True 
 B)False

Question 19

A statistic is a measurable characteristic of the population.

Accepted Answer

A) True 
 B)False

Question 20

Which measure of central location requires that the data be ranked before it is possible to determine it? _____________.

Accepted Answer

The answer of Which measure of central location requires that...

The arithmetic mean is the sum of the quantitative observations divided by the total number of observations.

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

The sum of the deviations of each data value from this measure of central location will always be zero.

The weights (in kilograms)of a group of crates being shipped to Panama are 95,103,110,104,105,112 and 92.What is the mean deviation?

The U.S.Department of Education reported that for the past seven years 4,033,5,652,6,407,7,201,8,719,11,154,and 15,121 people received bachelor's degrees in computer and information sciences.What is the annual arithmetic mean number of degrees awarded?

When is the only time the variance equals the standard deviation? ________________

For any data set,which measures of central location have only one value?

Extremely high or low scores affect the value of the median.

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

Sometimes,data has two values that have the highest and equal frequencies.In this case,the distribution of the data can best be summarized as

For a symmetrical distribution,the variance is equal to the standard deviation.

If a set of observations contains an extreme value and none of the observations repeat themselves,what is the most representative measure of central location? _____________

What is the positive square root of the variation? _________.

The net incomes (in $ millions)of a sample of steel fabricators are: $86,$67,$86 and $85.What is the modal net income?

The median can be determined for any set of interval-level data.

The weights (in grams)of the contents of several small bottles are 4,2,5,4,5,2 and 6.What is the sample variance?

A value that is typical or representative of the data is referred to as a measure of central location.

A statistic is a measurable characteristic of the population.

Which measure of central location requires that the data be ranked before it is possible to determine it? _____________.

What Is Statistics

Describing Data: Frequency Distributions and Graphic Presentations

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

Linear Regression and Correlation

Multiple Regression and Correlation Analysis

Chi-Square Applications

Filters

Exam 3: Describing Data: Numerical Measures

The arithmetic mean is the sum of the quantitative observations divided by the total number of observations.

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

The sum of the deviations of each data value from this measure of central location will always be zero.

The weights (in kilograms)of a group of crates being shipped to Panama are 95,103,110,104,105,112 and 92.What is the mean deviation?

The U.S.Department of Education reported that for the past seven years 4,033,5,652,6,407,7,201,8,719,11,154,and 15,121 people received bachelor's degrees in computer and information sciences.What is the annual arithmetic mean number of degrees awarded?

When is the only time the variance equals the standard deviation? ________________

For any data set,which measures of central location have only one value?

Extremely high or low scores affect the value of the median.

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

Sometimes,data has two values that have the highest and equal frequencies.In this case,the distribution of the data can best be summarized as

For a symmetrical distribution,the variance is equal to the standard deviation.

If a set of observations contains an extreme value and none of the observations repeat themselves,what is the most representative measure of central location? _____________

What is the positive square root of the variation? _________.

The net incomes (in $ millions)of a sample of steel fabricators are: $86,$67,$86 and $85.What is the modal net income?

The median can be determined for any set of interval-level data.

The weights (in grams)of the contents of several small bottles are 4,2,5,4,5,2 and 6.What is the sample variance?

A value that is typical or representative of the data is referred to as a measure of central location.

A statistic is a measurable characteristic of the population.

Which measure of central location requires that the data be ranked before it is possible to determine it? _____________.

What Is Statistics

Describing Data: Frequency Distributions and Graphic Presentations

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

Linear Regression and Correlation

Multiple Regression and Correlation Analysis

Chi-Square Applications

Filters