6. A histogram of residuals is given below. Based on this histogram would the as

Question

6. A histogram of residuals is given below. Based on this histogram would the assumption of normality of error be valid? Histogram of RESI7 10000 10000 20000 RESI7 a) Yes the assumption is valid because the histogram has an approximate bell-curve b) Yes the assumption is valid because the histogram does not have an approximate bell- curve c) No the assumption is not valid because the histogram has an approximate bell-curve d) No the assumption is not valid because the histogram does not have an approximate bell- curve 7. Use the data and prediction equation given below to calculate the residual value when = 7. 34 30 36 31 35 = 38.38-0.925x 2 a) 0.24 b) -1.91 c) -0.03 d) 2.17

Explanation / Answer

6) option d is correct

7)

here at X =7 ; predicted value ; yhat

=31.905

therefore residual =actual-predicted =30-31.905 =-1.91

option B is correct

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