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LEARNING ACTIVITY 3 INSTRUCTIONS
This learning activity consists of a variety of problems from Chapters 13–15. Include a title page with your assignment in current APA format. Spaces for answers are provided. Submit your assignment as a Word document.

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.            9, 7, 6, 6, 2
b.            12, 10, 9, 8, 6
c.             82, 82, 82, 82, 82
d.            12, 10, 9, 8, 6, 45

1.            (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?

(24 pts, 2 pts each) Fill in the blanks on the table with the appropriate raw scores, z-scores, T-scores, and approximate percentile ranks. You may refer to the  distribution curve below.

Note:  the Mean = 50, SD = 5.

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