Practice Problem Exam 1

Practice Problem Exam 1 - Variance ___________ Standard...

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Practice Problem Exam 1 The state police, using radar, checked the speeds (in mph) of 30 passing  motorists at a checkpoint. The results are listed below: 44 38 41 50 36 36 43 42 49 48 35 40 36 41 43 50 45 45 39 38 50 41 47 36 35 40 42 43 48 33 Mean ______________ Median ______________ Mode ________ Range ________ SSx _________ 
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Unformatted text preview: Variance ___________ Standard Deviation __________ Also Calculate: P 75 , P. R. of 48 Solution: 33, 35, 35, 36, 36, 36, 36, 38, 38, 39, 40, 40, 41, 41, 41, 42, 42, 43, 43, 43, 44, 45, 45, 47, 48, 48, 49, 50, 50 ,50 Mode = 36 Median= 41.5 (41 + 42) / 2 Mean = 1254/30 =41.8 P 75 = 45.2 P. R. of 48 = 83.5...
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This note was uploaded on 03/26/2011 for the course PSYCH 1167 taught by Professor Bingshi during the Spring '10 term at Temple.

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Practice Problem Exam 1 - Variance ___________ Standard...

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