Question 1

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

Accepted Answer

cross-sect

Question 2

When two variables tend to move in opposite directions,yet still form a linear pattern,how do you describe their relationship?

Accepted Answer

A) A positive linear relationship. 
B) A negative linear relationship. 
C) A proportional inverse relationship. 
D) None of these choices. 
A) A positive linear relationship. 
B) A negative linear relationship. 
C) A proportional inverse relationship. 
D) None of these choices.

Question 3

Home Care Data are collected on the number of house calls (x)made in a given week by each of 60 nurses in a certain hospital.The same data set is displayed in each of the three histograms below. ​   ​   ​   ​ ​
-{Home Care Narrative} Which histogram makes the differences in the house calls appear to be the least dramatic?

Accepted Answer

Histogram 3 makes the differences look l

Question 4

The first scatter diagram below shows a stronger linear relationship than the second scatter diagram.(Assume the scales on both scatter diagrams are the same.)

Accepted Answer

A) True 
 B)False

Question 5

{Teachers Ages Narrative} Draw a frequency histogram of this data which contains six classes.What is the shape of the histogram?

Accepted Answer

@#IMG-DLM& This histogram of a

Question 6

An online dating service has a quick poll on its website showing the following results.Critique the graph portion of the table.How can it be improved?

Accepted Answer

The graph has no scale on it;

Question 7

A modal class is the class with the largest number of observations.

Accepted Answer

A) True 
 B)False

Question 8

A(n)____________________ is best defined as a set of symbols (such as people or animals)used to depict data.It often distorts the actual sizes of the items being portrayed.

Accepted Answer

The answer of A(n)____________________ is best defined as a set...

Question 9

You are less likely to be misled by a graph if you:

Accepted Answer

A) Concentrate on the numbers rather than the form of the graph. 
B) Pay more attention to the graph's caption than to the graph itself. 
C) Ignore the scales used on the axes. 
D) None of these choices. 
A) Concentrate on the numbers rather than the form of the graph. 
B) Pay more attention to the graph's caption than to the graph itself. 
C) Ignore the scales used on the axes. 
D) None of these choices.

Question 10

If two variables have a strong linear relationship,that means one variable is causing the other variable to go up or down.

Accepted Answer

A) True 
 B)False

Question 11

Graphical excellence is a term usually applied to techniques that are informative and concise and that impart information clearly to their viewers.

Accepted Answer

A) True 
 B)False

Question 12

Home Care Data are collected on the number of house calls (x)made in a given week by each of 60 nurses in a certain hospital.The same data set is displayed in each of the three histograms below. ​   ​   ​   ​ ​
-{Home Care Narrative} How many nurses are there in this hospital?

Accepted Answer

60; you get this number by adding up all

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

A pie chart showing 80% yes and 20% no would look the same whether it was based on 10,000 observations or 10 observations.This is one way that pie charts can be deceptive.

Accepted Answer

A) True 
 B)False

Question 15

Explain the difference between a histogram and a line chart.

Accepted Answer

A histogram is a dis

Question 16

Below are two line charts where the percentage return for a stock is shown over time.The two graphs are made from the same data set.     Explain why these two line charts look different.

Accepted Answer

Their scales on the Y-axis are

Question 17

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

Accepted Answer

strength;

Question 18

The line chart below shows potato prices per pound for each month from January (month 1)to December last year.By looking at this chart you can see the lowest potato prices occurred in ____________________.

Accepted Answer

The answer of The line chart below shows potato prices...

Question 19

Differences in the frequencies of a histogram appear to be less dramatic if you ____________________ the vertical axis.

Accepted Answer

The answer of Differences in the frequencies of a histogram...

Question 20

Compare the two histograms below.Which statement is true?

Accepted Answer

A) The shape of histogram A is the same as the shape of histogram B. 
B) The shape of histogram A is positively skewed compared to histogram b. 
C) The shape of histogram A is negatively skewed compared to histogram B. 
D) You cannot compare the shapes of these two histograms without the original data. 
A) The shape of histogram A is the same as the shape of histogram B. 
B) The shape of histogram A is positively skewed compared to histogram b. 
C) The shape of histogram A is negatively skewed compared to histogram B. 
D) You cannot compare the shapes of these two histograms without the original data.

Exam 3: Graphical Descriptive Techniques 2

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

When two variables tend to move in opposite directions,yet still form a linear pattern,how do you describe their relationship?

The first scatter diagram below shows a stronger linear relationship than the second scatter diagram.(Assume the scales on both scatter diagrams are the same.)

{Teachers Ages Narrative} Draw a frequency histogram of this data which contains six classes.What is the shape of the histogram?

An online dating service has a quick poll on its website showing the following results.Critique the graph portion of the table.How can it be improved?

A modal class is the class with the largest number of observations.

A(n)____________________ is best defined as a set of symbols (such as people or animals)used to depict data.It often distorts the actual sizes of the items being portrayed.

You are less likely to be misled by a graph if you:

If two variables have a strong linear relationship,that means one variable is causing the other variable to go up or down.

Graphical excellence is a term usually applied to techniques that are informative and concise and that impart information clearly to their viewers.

Home Care Data are collected on the number of house calls (x)made in a given week by each of 60 nurses in a certain hospital.The same data set is displayed in each of the three histograms below. ​ ​ ​ ​ ​ -{Home Care Narrative} How many nurses are there in this hospital?

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

A pie chart showing 80% yes and 20% no would look the same whether it was based on 10,000 observations or 10 observations.This is one way that pie charts can be deceptive.

Explain the difference between a histogram and a line chart.

Below are two line charts where the percentage return for a stock is shown over time.The two graphs are made from the same data set. Explain why these two line charts look different.

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

The line chart below shows potato prices per pound for each month from January (month 1)to December last year.By looking at this chart you can see the lowest potato prices occurred in ____________________.

Differences in the frequencies of a histogram appear to be less dramatic if you ____________________ the vertical axis.

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

Home Care Data are collected on the number of house calls (x)made in a given week by each of 60 nurses in a certain hospital.The same data set is displayed in each of the three histograms below. -{Home Care Narrative} How many nurses are there in this hospital?

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