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Test1Solutions1

# Test1Solutions1 - Statistics Probability Exam#1(Chapters 1...

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Statistics & Probability Exam #1 (Chapters 1 - 6) Please Show Work, when possible! (If you don't, 1can9t give you paTtial credit!) 1. We collect data from 50 male students about their eye color, hours of homework they did last week, number of cigarettes they smoke daily and their student id number. . , I . .) ' > I ,";;, P ' - - .,, C u - L . - c) Which variable is most likely to be Normal? ( P l e a s a u r e ) h c , ~ 4- I '., ' J 8 . . . 8 , . . d) Which variable is an identifier b) Is the mean smaller o arger an the median? please explain, if you feel uncertain) 0 2. For the data whose distribution is shown, answer the'following questions: . 8 : . >.:I ( :.. i' - < . .,.- - _ . . - _ . - _ 1 - . _ ._ -. - - . - rlc i , , , . A. +.-.- - - --- - - -. - , - 3 - -- 4 . < -,> 3' ' . \ - A c) Is it better to s m a r i z & the data with the mean and standard deviation or me&& and IQR? Explain why. . ,- w - . . ,n, * * - I . H ' > , ---< - - i * C r .,,i -- _. . - - p>. - . ' J .- , a) The distribution is skewed to the . . , , . !.. - , ,; .. :.. - ; ;. j *y;l3,,? ,+.';. -,:,[*:-.:.? r--. v1-y- . . .j -.- 1 :3& <.i. - - , ,L.- . ;< .: L.3 1 , '-. I .>., ,: . , f , , . ; ,,,: - . :* , , a . .AF. . ; ; ; -*- , y _ .~ .jLr .Ji;..:-:;d.'h, i.11 :Q :;-A. > ' ';ti-.: - I P . . . .1_ I :' . 1. . . - ! . . . - - . - 1. , , ! ; : # - - ;I . , , r . . ' 7 i

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a) HadapHof 1.8 b) Varied with a standard deviation of 1.8 on. Just choose the best answer. Suppose that a Normal model
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