The following simple random sample of grades has been obtained:

43 68 68 70 71 78 79 80 81 84 86 86 89 99 105

a) Calculate the five-number summary

Question 1 options:

43 70 80 80 105

44 70 80 86 99

43 70 81 87 105

43 70 80 86 105

The following simple random sample of grades has been obtained:

43 68 68 70 71 78 79 80 81 84 86 86 89 99 105

b) Are there outliers? If so, point them out.

Question 2 options:

Yes, 43

Yes, 43 and 105

Yes, 100

None

The following simple random sample of grades has been obtained:

43 68 68 70 71 78 79 80 81 84 86 86 89 99 105

c) Assume that in the above sample, the two smallest numbers are replaced by 35. Which characteristics below will NOT change?

Question 3 options:

mean, variance, standard deviation

all three quartiles

none

median, 3rd quartile, standard deviation

When taking a college algebra course, Ann took the following scores for quizzes:

18, 16, 12, 20.

Find the mean and standard deviation up to the first digit after the point.

Question 4 options:

13,2.1

15.9, 2.9

16.5, 0

16.5, 3.4.