EDLC 606
L AEARNING CTIVITY: STATISTICS EXERCISES STUDENT TEMPLATE
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1. (20 Pts, 1 pt each). Calculate the mean, median, mode, standard deviation, and range for
the following sets of measurements (fill out the table):
a. 20, 18, 17, 17, 19
17, 17, 18, 19, 20 = 91/5 = 18.2 for mean
17, 17, 18, 19, 20 = 18 is the median
17, 17, 18, 19, 20 = 17 in the mode because 17 is seen twice
20-17 = 3, which is the range
SD: 6.8/5-1 = 6.8/4
s = 1.7
1.7 squared is 1.3038405
b. 15, 10, 7, 6, 4
4, 6, 7, 10, 15 = 42/5= 8.4 for the mean
4, 6, 7, 10, 15 = 7 is the median
4, 6, 7, 10, 15 = No mode, all numbers appear only once
15-4= 11, which is the range
SD: 73.3 /5-1 = 73.3 / 4
s = 18.3
18.3 squared is 4.2778499
c. 28, 28, 28, 28, 28
28 is the mean
28 is the median
28 is the mode
There is no standard deviation and there is no range
d. 10, 10, 7, 6, 4, 79
4, 6, 7, 10, 10, 79 = 116/6= 16.33
4, 6, 7, 10, 10, 79 = 7+10 = 17, 17/2 is 8.5 which is the median
4, 6, 7, 10, 10, 79 = 10 is the mode because it is seen twice
79-4 = 75, which is the range
SD: 4299.3333/6-1 = 4299.3333/5
s = 859.86666
859.86666 squared is 29.32
DISTRIB
MEAN
MEDIAN
MODE
SD
RANGE
a.
18.2
18
17
1.3
3
b.
8.4
7
N/A
4.27
11
c.
28
28
28
