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Name _ _ _ __ Date 27 Apr 10 EXAM 1 Part 2 Part 2: 7 Points An exam of 21 students in a statistics class produced the scores as listed. Construct a...

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Name ____ _ EXAM 1 Part 2 Date 27 Apr 10 Part 2: NO.5: 7 Points· An exam of 21 students in a statistics class produced the scores as listed. Construct a frequency distribution that has 5 classes. Compute mid point, relative frequency, cumulative frequency, population mean, standard deviation and the third quartile (0 3 ), Data: 8.5, 11.0, 11.0, 11.0, 11.5, 12.0, 12.5, 13.0, 13.0, 13.5, 13.5, 13.5, 13.5, 14.0, 14.0, 14.5, 14.5, 14.5, 14.5, 14.5, 15.0. -.-~--- -- Frequency Relative Cumulative Class Mid Point Frequency (X - J.l) ~~:~)2 f Frequency fIN ----~- 6.5 - I -- I ._- r=-- ---------- 8.5 - 1 I -----------~- -- -----~ 10.5 - 12.0 I 12.5 - 14.0 ---- ------ r-- i - --- - -~=~r~ ------ 14.5 - 16.0 ---- ILf= L fIN = 1.00 'L (X - J.l)2 = --- -, -_·_-t- ---- N =Lf= ~ X = - r;-=~~XlNT- - -- --- --- -----1 . r------ --- -------~ --- ------~- -- I -- -- - -- __ - __ I :
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----- Name EXAM 1 Part 2 Date 27 Apr 10 Variance = a 2 = L (X - J.l)2/N = Standard Deviation = 0' = (0'2)112 = Finding Quartiles, Q1' Q 2 and Q 3 : 8.5, 11.0, 11.0, 11.0, 11.5, 12.0, 12.5, 13.0, 13.0, 13.5, 13.5, 13.5, 13.5, 14.0, 14.0, 14.5, 14.5, 14.5, 14.5, 14.5, 15.0
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