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Engineers&Scientists(9th_Edition)_Walpole.pdf Chapter 8.1 Random Sampling

Engineers&Scientists(9th_Edition)_Walpole.pdf Chapter 8.1 Random Sampling

collect data on all my students' final exam scores, and I calculate the mean, median, variance, and range. If I were to add 5 points to everyone's exam score, how would it affect the mean?
a. It would add 5 points to the mean.

b. It would multiply the mean by 5.

c. It would multiply the mean by 25.

d. It would not change the mean.

e. Other :

In the previous problem, how would adding 5 points to everyone's exam score affect the median?
a. It would add 5 points to the median.

b. It would multiply the median by 5.

c. It would multiply the median by 25.

d. It would not change the median.

e. Other :

In the first problem, how would adding 5 points to everyone's exam score affect the variance?
a. It would add 5 points to the variance.

b. It would multiply the variance by 5.

c. It would multiply the variance by 25.

d. It would not change the variance.

Rosa Parks 10-Nov-2017

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