Question 1

The following table lists some of the busiest ports in the world based on the number of containers in 2010.

Accepted Answer

The answer of The following table lists some of the...

Question 2

Johnson and Johnson (JNJ)is a consumer staples company.Consumer staples are products people need and buy even during times of financial hardship.Do you think JNJ will have a volatile stock price? Does the accompanying graph accurately depict the volatility of JNJ stock? Explain.

Accepted Answer

The answer of Johnson and Johnson (JNJ)is a consumer staples...

Question 3

The following table shows analyst sentiment ratings for the 30 stocks listed in the Dow Jones Industrial Average.

Accepted Answer

The answer of The following table shows analyst sentiment ratings...

Question 4

Each month the Bureau of Labor Statistics reports the number of people (in thousands)employed in the United States by age.The accompanying frequency distribution shows the results for August 2011 (Source: http://data.bls.gov/pdq/SurveyOutputServlet).  a.Construct a relative frequency distribution.What proportion of workers is between 20 and 24 years old?
B)Construct a cumulative relative frequency distribution.What proportion of workers is younger than 35 years old?
C)Construct a relative frequency histogram.

Accepted Answer

The answer of Each month the Bureau of Labor Statistics...

Question 5

The following table shows average wind speeds (in miles per hour)during 15 major fires in California.  Construct a stem-and-leaf diagram.Were most of these storms fueled by 45+ mile-per-hour winds? Explain.

Accepted Answer

The answer of The following table shows average wind speeds...

Question 6

The dividend yields of the stocks in an investor's portfolio are shown in the following cumulative relative frequency distribution.  a.Construct an ogive.
B)Approximately what percent of the stocks had a dividend yield of 3% or larger?

Accepted Answer

The answer of The dividend yields of the stocks in...

Question 7

The following data represent the ages of patients in the cardiac section of the local hospital.Construct a stem-and-leaf diagram.Comment on whether or not the distribution is symmetric.
48,53,60,61,62,63,70,70,72,77,78,79,80,82,87,88,90

Accepted Answer

The answer of The following data represent the ages of...

Question 8

Construct a stem-and-leaf diagram for the following data set:  Is the distribution symmetric?

Accepted Answer

The answer of Construct a stem-and-leaf diagram for the following...

Question 9

Use the following data to construct a scatterplot.What type of relationship is implied?

Accepted Answer

A positive relationship is implied, as there appears to be a general upward trend in the data. As x increases, so does y.

Question 10

A survey of 400 unemployed people was completed at a job fair.Each person was asked to categorize their job interests.The accompanying relative frequency distribution was constructed.  a.Construct the corresponding frequency distribution.How many of these people designated that the computer and mathematical industry was their job interest?
B)Construct a pie chart.

Accepted Answer

The answer of A survey of 400 unemployed people was...

Question 11

The following table shows the prices (in $1,000s)of the last 15 trucks sold at a Toyota dealership.  Construct a stem-and-leaf diagram.Given this diagram,estimate the price that a potential buyer would likely pay for a Toyota truck.

Accepted Answer

The answer of The following table shows the prices (in...

Question 12

The accompanying cumulative relative frequency distribution shows a summary of the scores from an Algebra II exam at a local high school.Twenty students took the exam.  a.Construct the relative frequency distribution.What proportion of students scored between 81 and 90?
B)Construct the frequency distribution.How many students scored between 71 and 80?
C)Construct an ogive.What is the approximate percentage of students that scored less than 85?

Accepted Answer

The answer of The accompanying cumulative relative frequency distribution shows...

Question 13

A car dealership created a scatterplot showing the manufacturer's retail price and profit margin for the cars they have on their lot.  As the manufacturer's suggested retail price increases,the profit margin tends to…

Accepted Answer

The answer of A car dealership created a scatterplot showing...

Question 14

A high school football league recorded the average points scored per game,as well as the winning percentage for the 10 teams in the league.  Construct a scatterplot.Does scoring more points appear to be associated with a higher winning percentage?

Accepted Answer

The answer of A high school football league recorded the...

Question 15

Use the following data to construct a scatterplot.What type of relationship is implied?

Accepted Answer

The answer of Use the following data to construct a...

Question 16

Construct a stem-and-leaf diagram with the following data set:  Is the distribution symmetric?

Accepted Answer

The answer of Construct a stem-and-leaf diagram with the following...

Question 17

A hair stylist records the hair color of her 25 most recent appointments,classifying the color as blonde,brown,black,or red.Her data set is displayed next.  
A)Construct a frequency and relative frequency distribution of the hair color of the stylist's customers.
B)Construct a pie chart.Which hair color is the most common among the stylist's customers?
C)Create a bar chart to display the frequency distribution.How many customers had black hair?

Accepted Answer

The answer of A hair stylist records the hair color...

Question 18

A statistics instructor computes the grade and percentage of classes that each of his students attends.Construct a scatterplot from the data displayed next.Does a relationship exist between attendance and grade?

Accepted Answer

The answer of A statistics instructor computes the grade and...

Question 19

The following table displays the top 40 American League batting averages of the 2011 season.  Source: http://www.espn.com
A)Construct frequency,relative frequency,and cumulative relative frequency distributions that group the data in classes of 0.265 up to 0.280,0.280 up to 0.295,0.295 up to 0.310,and so on.
B)How many of these players have a batting average above 0.340? What proportion of these players has a batting average of at least 0.280,but below 0.295? What percentage of these players has a batting average below 0.325?
C)Construct a relative frequency histogram.Is the distribution symmetric? If not,is it positively or negatively skewed?
D)Construct an ogive.
E)Using the ogive,approximately what proportion of the players in this group has a batting average above 0.290?

Accepted Answer

The answer of The following table displays the top 40...

Quiz 2: Tabular and Graphical Methods

The following table lists some of the busiest ports in the world based on the number of containers in 2010.

Johnson and Johnson (JNJ)is a consumer staples company.Consumer staples are products people need and buy even during times of financial hardship.Do you think JNJ will have a volatile stock price? Does the accompanying graph accurately depict the volatility of JNJ stock? Explain.

The following table shows analyst sentiment ratings for the 30 stocks listed in the Dow Jones Industrial Average.

The following table shows average wind speeds (in miles per hour)during 15 major fires in California. Construct a stem-and-leaf diagram.Were most of these storms fueled by 45+ mile-per-hour winds? Explain.

The dividend yields of the stocks in an investor's portfolio are shown in the following cumulative relative frequency distribution. a.Construct an ogive. B)Approximately what percent of the stocks had a dividend yield of 3% or larger?

The following data represent the ages of patients in the cardiac section of the local hospital.Construct a stem-and-leaf diagram.Comment on whether or not the distribution is symmetric. 48,53,60,61,62,63,70,70,72,77,78,79,80,82,87,88,90

Construct a stem-and-leaf diagram for the following data set: Is the distribution symmetric?

Use the following data to construct a scatterplot.What type of relationship is implied?

The following table shows the prices (in $1,000s)of the last 15 trucks sold at a Toyota dealership. Construct a stem-and-leaf diagram.Given this diagram,estimate the price that a potential buyer would likely pay for a Toyota truck.

A car dealership created a scatterplot showing the manufacturer's retail price and profit margin for the cars they have on their lot. As the manufacturer's suggested retail price increases,the profit margin tends to…

A high school football league recorded the average points scored per game,as well as the winning percentage for the 10 teams in the league. Construct a scatterplot.Does scoring more points appear to be associated with a higher winning percentage?

Use the following data to construct a scatterplot.What type of relationship is implied?

Construct a stem-and-leaf diagram with the following data set: Is the distribution symmetric?

A statistics instructor computes the grade and percentage of classes that each of his students attends.Construct a scatterplot from the data displayed next.Does a relationship exist between attendance and grade?