Question 1

When a distribution has more values to the right and tails to the left,we say it is skewed negatively.

Accepted Answer

A) True 
 B)False

Question 2

{Test Grades Narrative} Describe the distribution of exam scores.

Accepted Answer

The distribution of the data i

Question 3

Compare the two histograms below.Which statement is true?

Accepted Answer

A) The center of histogram A is lower than the center of histogram B. 
B) The center of histogram A is higher than the center of histogram b. 
C) The center of histogram A is the same as the center of histogram B. 
D) You cannot compare the centers of these two histograms without the original data. 
A) The center of histogram A is lower than the center of histogram B. 
B) The center of histogram A is higher than the center of histogram b. 
C) The center of histogram A is the same as the center of histogram B. 
D) You cannot compare the centers of these two histograms without the original data.

Question 4

The graph below is an example of a histogram.

Accepted Answer

A) True 
 B)False

Question 5

In a histogram,each observation is assigned to one or more classes.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following is a characteristic of graphical excellence?

Accepted Answer

A) Data sets are summarized in tables wherever possible. 
B) The graph includes no more than one variable,to stress clarity. 
C) The substance of the data,and not the form of the graph,is stressed. 
D) All of these choices are true. 
A) Data sets are summarized in tables wherever possible. 
B) The graph includes no more than one variable,to stress clarity. 
C) The substance of the data,and not the form of the graph,is stressed. 
D) All of these choices are true.

Question 7

A(n)____________________ is a graphical display consisting of a set of points,each point representing one variable measured along the horizontal axis,and another variable measured along the vertical axis.

Accepted Answer

The answer of A(n)____________________ is a graphical display consisting of...

Question 8

We determine the approximate width of the classes by subtracting the smallest observation from the largest and dividing the answer by the number of ____________________.

Accepted Answer

The answer of We determine the approximate width of the...

Question 9

A(n)____________________ histogram is one with a long tail extending to either the right or the left.

Accepted Answer

The answer of A(n)____________________ histogram is one with a long...

Question 10

A graph of the frequency distribution for interval data is called a(n)____________________.

Accepted Answer

The answer of A graph of the frequency distribution for...

Question 11

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:   ​ ​ ​ ​
-{Insurance Company Narrative} 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 12

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 13

It is speculated that the number of police officers has a negative linear relationship with number of crimes.Explain why this might be so.

Accepted Answer

As the number of police offers

Question 14

A(n)____________________ is a table that sorts data into class intervals (categories)and gives the number of observations in each interval (category).

Accepted Answer

frequency

Question 15

Correlation implies causation.

Accepted Answer

A) True 
 B)False

Question 16

A line chart is created by plotting the value of the variable on the ____________________ axis and the time periods on the ____________________ axis.

Accepted Answer

vertical;

Question 17

One of the variables used to help predict unemployment rates is the rate of inflation.Accordingly,we identify rate of inflation as the ____________________ variable,and unemployment rate as the ____________________ variable.

Accepted Answer

independen

Question 18

{Test Grade Narrative} Construct a relative frequency histogram for this data set and discuss its shape.

Accepted Answer

@#IMG-DLM& The distribution of

Question 19

The intervals (classes)in a histogram do not overlap.

Accepted Answer

A) True 
 B)False

Question 20

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.

Exam 3: Graphical Descriptive Techniques 2

When a distribution has more values to the right and tails to the left,we say it is skewed negatively.

{Test Grades Narrative} Describe the distribution of exam scores.

Compare the two histograms below.Which statement is true?

The graph below is an example of a histogram.

In a histogram,each observation is assigned to one or more classes.

Which of the following is a characteristic of graphical excellence?

A(n)____________________ is a graphical display consisting of a set of points,each point representing one variable measured along the horizontal axis,and another variable measured along the vertical axis.

We determine the approximate width of the classes by subtracting the smallest observation from the largest and dividing the answer by the number of ____________________.

A(n)____________________ histogram is one with a long tail extending to either the right or the left.

A graph of the frequency distribution for interval data is called a(n)____________________.

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

It is speculated that the number of police officers has a negative linear relationship with number of crimes.Explain why this might be so.

A(n)____________________ is a table that sorts data into class intervals (categories)and gives the number of observations in each interval (category).

Correlation implies causation.

A line chart is created by plotting the value of the variable on the ____________________ axis and the time periods on the ____________________ axis.

One of the variables used to help predict unemployment rates is the rate of inflation.Accordingly,we identify rate of inflation as the ____________________ variable,and unemployment rate as the ____________________ variable.

{Test Grade Narrative} Construct a relative frequency histogram for this data set and discuss its shape.

The intervals (classes)in a histogram do not overlap.

Compare the two histograms below.Which statement is true?

What Is Statistics

Graphical Descriptive Techniques 1

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

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

Model Building

Nonparametric Statistics

Time-Series Analytics and Forecasting

Statistical Process Control

Decision Analysis

Conclusion

Filters

A line chart is created by plotting the value of the variable on the axis and the time periods on the axis.

One of the variables used to help predict unemployment rates is the rate of inflation.Accordingly,we identify rate of inflation as the variable,and unemployment rate as the variable.