Question 1

A skewed histogram is one with a long tail extending either to the right or left.

Accepted Answer

A) True 
 B)False  False

Question 2

Observations that are measured at the same time are called ____________________ data.

Accepted Answer

cross-sectional
cross sectional

Question 3

Electronics Company: At a meeting of regional offices managers of a national electronics company, a survey was taken to determine the number of employees the regional managers supervise in the operation of their departments. The results of the survey are shown below.
  
-How many regional offices are represented in the survey results?

Accepted Answer

7 + 11 + 14 + 8 + 10 = 50

Question 4

Which of the following statements describe(s) the line chart below?

Accepted Answer

A)  November experienced the lowest sales throughout the year. 
B)  August experienced the highest sales throughout the year. 
C)  Sales did not fluctuate more than 30 units on either side of 90. 
D)  All of these choices are true. 
A)  November experienced the lowest sales throughout the year. 
B)  August experienced the highest sales throughout the year. 
C)  Sales did not fluctuate more than 30 units on either side of 90. 
D)  All of these choices are true.

Question 5

Your age is an interval variable.

Accepted Answer

A) True 
 B)False

Question 6

In purchasing an automobile, there are a number of variables to consider. The body style of the car (sedan, coupe, wagon, etc.) is an example of a(n) ____________________ variable.

Accepted Answer

nominal
ca

Question 7

A(n) ____________________ chart is not able to show frequencies. It can only show relative frequencies.

Accepted Answer

The answer of A(n) ____________________ chart is not able to...

Question 8

A bar chart is used to represent ____________________ data.

Accepted Answer

nominal
ca

Question 9

Interval data, such as heights, weights, and incomes, are also referred to as quantitative or numerical data.

Accepted Answer

A) True 
 B)False

Question 10

Car buyers were asked to indicate the car dealer they believed offered the best overall service. The four choices were Convoy Motors (C), Mako Chrysler (M), Torrent Auto (T), and Unequaled Chevrolet (U). The following data were obtained:   What percentage of car buyers identified Convoy Motors as having the best overall service?

Accepted Answer

A)  1/4 = 0.25 or 25% 
B)  14/40 = 0.35 or 35% 
C)  14% 
D)  None of these choices. 
A)  1/4 = 0.25 or 25% 
B)  14/40 = 0.35 or 35% 
C)  14% 
D)  None of these choices.

Question 11

For what type of data are frequencies the only calculations that can be done?

Accepted Answer

A)  Interval data 
B)  Nominal data 
C)  Ordinal data 
D)  None of these choices. 
A)  Interval data 
B)  Nominal data 
C)  Ordinal data 
D)  None of these choices.

Question 12

Which of the following describes the shape of the histogram below?

Accepted Answer

A)  Positively skewed 
B)  Negatively skewed 
C)  Symmetric 
D)  None of these choices 
A)  Positively skewed 
B)  Negatively skewed 
C)  Symmetric 
D)  None of these choices

Question 13

The two most important characteristics to examine in a scatter diagram are the number of possible categories for X and Y and the number of observations in each category.

Accepted Answer

A) True 
 B)False

Question 14

Insurance Company: A representative from a local insurance agency selected a random sample of insured homeowners and recorded the number of claims made in the last three years, with the following results:
  
-What proportion of homeowners had no claims in the last three years?

Accepted Answer

The answer of Insurance Company: A representative from a local...

Question 15

The two most important characteristics to look for in a scatter diagram are the ____________________ and ____________________ of the linear relationship.

Accepted Answer

strength;

Question 16

Compare the two histograms below. Which statement is true?

Accepted Answer

A)  The spread of histogram A is smaller than the spread of histogram B. 
B)  The spread of histogram A is larger than the spread of histogram B. 
C)  The spread of histogram A is the same as the spread of histogram B. 
D)  You cannot compare the spreads of these two histograms without the original data. 
A)  The spread of histogram A is smaller than the spread of histogram B. 
B)  The spread of histogram A is larger than the spread of histogram B. 
C)  The spread of histogram A is the same as the spread of histogram B. 
D)  You cannot compare the spreads of these two histograms without the original data.

Question 17

The number of class intervals in a histogram depends on the number of observations in the data set.

Accepted Answer

A) True 
 B)False

Question 18

A professor examines the relationship between minutes studying and exam score (out of 200 points) for a random sample of his students. The scatter diagram is shown below. It appears that study time has somewhat of a positive linear relationship with exam score.

Accepted Answer

A) True 
 B)False

Question 19

According to the stem-and-leaf plot below, the median quiz score for this data set is 8.

Accepted Answer

A) True 
 B)False

Question 20

A modal class in a histogram is the class that includes

Accepted Answer

A)  the largest number of observations. 
B)  the smallest number of observations. 
C)  the largest observation in the data set. 
D)  the smallest observation in the data set. 
A)  the largest number of observations. 
B)  the smallest number of observations. 
C)  the largest observation in the data set. 
D)  the smallest observation in the data set.

A skewed histogram is one with a long tail extending either to the right or left.

Observations that are measured at the same time are called ____________________ data.

Which of the following statements describe(s) the line chart below?

Your age is an interval variable.

In purchasing an automobile, there are a number of variables to consider. The body style of the car (sedan, coupe, wagon, etc.) is an example of a(n) ____________________ variable.

A(n) ____________________ chart is not able to show frequencies. It can only show relative frequencies.

A bar chart is used to represent ____________________ data.

Interval data, such as heights, weights, and incomes, are also referred to as quantitative or numerical data.

For what type of data are frequencies the only calculations that can be done?

Which of the following describes the shape of the histogram below?

The two most important characteristics to examine in a scatter diagram are the number of possible categories for X and Y and the number of observations in each category.

Insurance Company: A representative from a local insurance agency selected a random sample of insured homeowners and recorded the number of claims made in the last three years, with the following results: -What proportion of homeowners had no claims in the last three years?

The two most important characteristics to look for in a scatter diagram are the and of the linear relationship.

Compare the two histograms below. Which statement is true?

The number of class intervals in a histogram depends on the number of observations in the data set.

A professor examines the relationship between minutes studying and exam score (out of 200 points) for a random sample of his students. The scatter diagram is shown below. It appears that study time has somewhat of a positive linear relationship with exam score.

According to the stem-and-leaf plot below, the median quiz score for this data set is 8.

A modal class in a histogram is the class that includes

What Is Statistics

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations, Part 1

Inference About Comparing Two Populations, Part 2

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

Review of Statistical Inference

Filters

Exam 2: Graphical and Tabular Descriptive Techniques

A skewed histogram is one with a long tail extending either to the right or left.

Observations that are measured at the same time are called ____________________ data.

Which of the following statements describe(s) the line chart below?

Your age is an interval variable.

In purchasing an automobile, there are a number of variables to consider. The body style of the car (sedan, coupe, wagon, etc.) is an example of a(n) ____________________ variable.

A(n) ____________________ chart is not able to show frequencies. It can only show relative frequencies.

A bar chart is used to represent ____________________ data.

Interval data, such as heights, weights, and incomes, are also referred to as quantitative or numerical data.

For what type of data are frequencies the only calculations that can be done?

Which of the following describes the shape of the histogram below?

The two most important characteristics to examine in a scatter diagram are the number of possible categories for X and Y and the number of observations in each category.

Insurance Company: A representative from a local insurance agency selected a random sample of insured homeowners and recorded the number of claims made in the last three years, with the following results: -What proportion of homeowners had no claims in the last three years?

The two most important characteristics to look for in a scatter diagram are the ____________________ and ____________________ of the linear relationship.

Compare the two histograms below. Which statement is true?

The number of class intervals in a histogram depends on the number of observations in the data set.

A professor examines the relationship between minutes studying and exam score (out of 200 points) for a random sample of his students. The scatter diagram is shown below. It appears that study time has somewhat of a positive linear relationship with exam score.

According to the stem-and-leaf plot below, the median quiz score for this data set is 8.

A modal class in a histogram is the class that includes

What Is Statistics

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations, Part 1

Inference About Comparing Two Populations, Part 2

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

Review of Statistical Inference

Filters

The two most important characteristics to look for in a scatter diagram are the and of the linear relationship.