EDLC 606
Learning Activity: 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
b. 15, 10, 7, 6, 4
c. 28, 28, 28, 28, 28
d. 10, 10, 7, 6, 4, 79
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DISTRIB |
MEAN |
MEDIAN |
MODE |
SD |
RANGE |
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a. |
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b. |
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c. |
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d. |
2. (20 Pts, 5 pts each) Answer the following questions.
a. Why is the SD in (d) so large compared to the SD in (b)?
b. Why is the mean so much higher in (d) than in (b)?
c. Why is the median relatively unaffected?
d. Which measure of central tendency best represents the set of scores in (d)? Why?
3. ( 4 pts) Determine the semi-interquartile range for the following set of scores.
92958965991008567729985100
