summarystat - Summary Statistics www.utcanada.com ECO220...

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Unformatted text preview: Summary Statistics www.utcanada.com ECO220 V20110 This file covers the topic of summary statistics. The following examples will show you how to calculate summary statistics using calculator and by hand. Example : the mean, median, range, inter – quartile range, variance and coefficient of variation the following data? 129.03 12.98 456.09 44.98 11 14.16 89.12 90.01 59.78 21.26 13.24 21 18.69 240.8 28.35 Solution : sort the data first (from the smallest to the largest one, or the other way) No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Data 11 12.98 13.24 14.16 18.69 21 21.26 28.35 44.98 59.78 89.12 90.01 129.03 240.8 456.09 Use calculator to get mean, standard variation. (refer to the user guide of TI calculator) ′ 2 nd′ + ′ ′ : will reset the calculator; ′ 2 nd′ + ′DATA′ and choose ′ 1 − VAR′ with ′ = ′ . Using ′DATA′ and ′∇′ to enter data. Enter data after each ′ X i = ′ . ′FRQ = 1 ′ indicate the times the data appears in the list. The default is 1. indicate the times the data appears in the list....
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