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Homework answers / question archive / Question1)The standard deviation of final grades for the face-to-face class is   

Question1)The standard deviation of final grades for the face-to-face class is   

Math

Question1)The standard deviation of final grades for the face-to-face class is   .Use the information to respond to the following question:(keep 2 decimal places)

 
 

 

 

 

Question 2

 

    

The population FTES for 2005–2006 through 2010–2011 was given in an updated report. The data are reported here.

 
 

 

 

 

Question 3

 

    

The population FTES for 2005–2006 through 2010–2011 was given in an updated report. The data are reported here.

 
 

 

 

 

 

Question 4

The length of the box in the boxplot portrays the

 


 

 

 

 

Question 5

For a boxplot, the vertical line inside the box indicates the location of the

 


 

 

 

 

 

Question 6

Suppose that a histogram of a data set is approximately symmetric and bell shaped. Approximately what percent of the observations are within two standard deviations of the mean?

 


 

 

Question 7

A histogram that has a single peak and looks approximately the same to the left and right of the peak is called:

 

 

Question 8

 

The following data represents the percent change in tuition levels at public, four-year colleges (inflation adjusted) from 2008 to 2013 (Weissmann, 2013). Below is the histogram, what is the shape of the dist

 


 

 

Question 9

Which of the following statements is true for the following data values: 7, 5, 6, 4, 7, 8, and 12?

 


 

 

Question 10

Cholesterol levels were collected from patients two days after they had a heart attack (Ryan, Joiner & Ryan, Jr, 1985). Find the mean.  Round to 4 decimal places.

 

    

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Question 11

The following data show the amount (in ounces) of beverage in randomly selected 16-ounce beverage cans.


 

 

 

 

 

Question 12

 

    

Cholesterol levels were collected from patients two days after they had a heart attack (Ryan, Joiner & Ryan, Jr , 1985). Use Excel to find the 38th percentile.  Round to two decimal places.

 
 

 

 

 

Question 13

 

    

Cholesterol levels were collected from patients two days after they had a heart attack (Ryan, Joiner & Ryan, Jr, 1985). Use Excel to find the 89th percentile.  Round your answer to one decimal place.

 

 
 

 

 

 

Question 14

 

    

Cholesterol levels were collected from patients two days after they had a heart attack (Ryan, Joiner & Ryan, Jr , 1985). Use Excel to find the 50th percentile

 

 
 

 

 

 

Question 15

 

 

The following data show the height (in inches) of a sample of students.

67

70

71

61

71

67

69

68

66

65

67

67

64

71

69

67

67

64

62

69

Fill in the blanks to create a stem leaf plot for these data. Key is 6|3 = 63. Report values for Leaf column in increasing order and do not keep spaces or place commas between values .

Stem

Leaf

6

  

7

  

 

 

 

 
 

 

Question 16

 

Eyeglassomatic manufactures eyeglasses for different retailers. The number of lenses for different activities is in table.

Activity

Grind

Multicoat

Assemble

Make Frames

Receive Finished

Unknown

Number of lenses

18872

12105

4333

25880

26991

1508

Grind means that they ground the lenses and put them in frames, multicoat means that they put tinting or scratch resistance coatings on lenses and then put them in frames, assemble means that they receive frames and lenses from other sources and put them together, make frames means that they make the frames and put lenses in from other sources, receive finished means that they received glasses from other source, and unknown means they do not know where the lenses came from. If you were making a pareto graph in Excel what would be the first label name?

 


 

 

 

Question 17

A scatter plot for a random sample of 24 countries shows the average life expectancy and the average number of births per woman (fertility rate). What is the approximate fertility rate for a country that has a life expectancy of 76 years? (2013, October 14).

 

 

 

 

 

     

 

 

Question 18

A scatterplot allows one to see:

 
 

 

Question 19

 

 

The graph below is for pulse rates before and after exercise.

Before

Pulse
Rates

After

9 8 8 7 6 5 2

 

6

 

 

9 8 8 8 6 5 5 5 1 1 0 0

 

7

 

 

8 8 7 5 4 2

 

8

 

5 6 6 7 8 9

4 0

 

9

 

0 1 1 2 3 4 5 5 6 8

4

 

10

 

0 1 4 6 7

 

 

11

 

6 7

 

 

12

 

4 5 8

What was the fastest pulse rate of the before exercise group?

 9 

 
 

 
 

 

 
 

            

 
 
 

 

 

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