Unformatted text preview: Next, add the two middle scores and divide by 2: (3+4)/2 = 3.5 Mode = 4 10. Mean = [(5*2) + (4*5) + (3*3) + (2*2) + (1*2)]/14= (10+20+9+4+2)/14 = 45/14 = 3.21 Median = 1 1 2 2 3 3 3 4 4 4 4 4 5 5 (3+4)/2 = 3.5 Mode = 4 20. Sample 1: n 1 = 4, X 1 = 8 X 1 = ∑X 1 / n 1 8 = ∑X 1 / 4 ∑X 1 = 32 Sample 2: n 2 = 6, X 2 = 12 X 2 = ∑X 2 / n 2 12 = ∑X 2 / 6 ∑X 2 = 72 weighted mean = (∑X 1 + ∑X 2 )/ n 1 + n 2 = (32 + 72)/6 + 4 = 10.4...
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This note was uploaded on 04/05/2008 for the course SOC 390 taught by Professor Lewin during the Fall '07 term at ASU.
 Fall '07
 Lewin

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