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Running head: LEARNING ACTIVITY 3 1 Learning Activity 3 Stephanie Hughes Liberty University
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LEARNING ACTIVITY 3 2 Learning Activity 3 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 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)? The Range and mean are higher in d than b, causing the standard deviation in d to be higher. b. Why is the mean so much higher in (d) than in (b)? The mean in d has an outlier that is larger than the other numbers. This increases the mean and skews the results in a higher direction. c. Why is the median relatively unaffected? The median is relatively unaffected because it is either the idle score or the sum of the middle score. Because it is measured this way it is not affected by extreme scores that lie within the data. d. Which measure of central tendency best represents the set of scores in (d)?
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