01:830:200 Lecture Notes - Lecture 4: Central Tendency, Standard Deviation, Kurtosis
18 Sep 2019
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On page 52 from the textbook, problem #8 asks: a week later, the group of 13 counselees take the same test a second time. The mean is 10. 62: find the median: first, you have to organize the values by lowest to highest numeric value: 2, 8, 9, 9, 10, 10, 11, 11, 11, 11, 12, 14, and 20. Then you find the value that has an equal number of values below and above it, which in this case is 11. The median is 11: find the mode: the mode is the most repeated value from the dataset; in this case, the most frequent value is 11. Legend: the sigma represents the sum of, x is the individual score from the set of data, m is the mean, and n is the number of scores. If the scores are far from the mean, the standard deviation is high.
