STAT 200 WEEK 2 Homework
Problem 9: Which of the box plots on the graph has a large positive skew? Which has a large negative skew? Box plot B has a large positive skew and box plot C has a large negative skew. Positive skews have a long tail going either right or up where a negative skew has a large tail going to the left or down. Problem 6: You recorded the time in seconds it took for 8 participants to solve a puzzle. These times appear below. However, when the data was entered into the statistical program, the score that was supposed to be 22.1 was entered as 21.2. You had calculated the following measures of central tendency: the mean, the median, and the mean trimmed 25%. Which of these measures of central tendency will change when you correct the recording error? Time (seconds) 15.2 18.8 19.3 19.7 20.2 21.8 22.1 29.4 The mean and the mean trimmed by 25% would be the ones to change. When corrected, the mean and mean trimmed only differ slightly by 0.1 but the median stays the same whether it was 22.1 or 21.1.
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