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Exercise2. MilesperGallon Thenumberofhighwaymilespergallonofthe10worstvehiclesisshown 12 15 13 14 15 16 17 16 17 18 (2a)(2pts) Filloutthetablebelowinordertocomputethemean,thevarianceandthestandarddeviationoftheabovedata. Values(X) Frequency(f) fX fX 2 12 13 14 15 16

Exercise2.MilesperGallonThenumberofhighwaymilespergallonofthe10worstvehiclesisshown

12 15 13 14 15 16 17 16 17 18

(2a)(2pts)Filloutthetablebelowinordertocomputethemean,thevarianceandthestandarddeviationoftheabovedata.

Values(X)	Frequency(f)	fX	fX²
12
13
14
15
16
17
18
Total

(2b)(2pts)ComputetheMeanandroundit.

X= fX=

(2c)(4pts)Thevarianceandroundit.

s²=

n( fX²)( fX)²

L L

n(n1)

(2d)(2pts)Thestandarddeviationandroundits= s2=.

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