statistic question

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Stem-and-leaf of Money  N  = 20

 

Leaf Unit = 1.0

 

 

 

 

 

 9   0  124456667

 

(3)  1  249

 

 8   2  128

 

 5   3  03

 

 3   4  27

 

 1   5  2

What is seen in the stem and leaf plot for the money variable (include the shape)? Explain your answer

 

 

 

  1. What is seen in the histogram created for the heights of students in this class (include the shape)? Explain your answer

 

  1. Compare the mean for the heights of males and the mean for the heights of females in these data. Compare the values and explain what can be concluded based on the numbers.

 

Females

67.273

2.533

Males

69.78

4.21

 

 

 

  1. Compare the standard deviation for the heights of males and the standard deviation for the heights of females in the class. Compare the values and explain what can be concluded based on the numbers.

 

 

 

Standard deviation

2.533

4.21

Using the empirical rule, 95% of female heights should be between what two values? Either show work or explain how your answer was calculated.

 

 

 

 

  1. Using the empirical rule, 68% of male heights should be between what two values? Either show work or explain how your answer was calculated.

 

 

 

 

 

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