In a Math 131 class at a University, the grades on the first
exam are shown in the table below. Complete parts (a) through (g)
below.
84
55
43
73
84
55
68
43
52
62
64
56
47
49
89
68
70
53
54
60
68
a. Find the mean.
The mean of the scores is
_______
(Round to one decimal place as needed.)
b. Find the median.
The median of the scores is
________
(Round to one decimal place as needed.)
c. Find the mode.
Find the mode of the test scores. Select the correct choice
below and, if necessary, fill in the answer box to
complete your choice.
A.The mode of the test scores is
________
B.The modes of the test scores are
nothing.
(Use a comma to separate answers as needed.)
C.
There is no mode for the test scores.
d. Find the IQR.
The IQR for the test scores is
________
(Round to one decimal place as needed.)
e. Find the variance of the scores.
The variance of the scores is
________
(Round to one decimal place as needed.)
f. Find the standard deviation of the scores.
The standard deviation of the scores is
_________
(Round to one decimal place as needed.)
g. Find the mean absolute deviation of the scores.
The mean absolute deviation of the scores is
________
(Round to one decimal place as needed.)