Fitting a straight line to a set of data yields the prediction line Y 4+3X The v
ID: 3198902 • Letter: F
Question
Fitting a straight line to a set of data yields the prediction line Y 4+3X The values of X used to find the prediction line range from 4 to 26 a. Should this model be used to predict the mean value of Y when X equals 5? b. Should this model be used to predict the mean value of Y when X equals -5? c. Should this model be used to predict the mean value of Y when X equals 0? d. Should this model be used to predict the mean value of Y when X equals 25? a. Should this model be used to predict the mean value of Y when X equals 5? ?Yes O No 0 Not enough information b. Should this model be used to predict the mean value of Y when X equals 5? ?Yes O No O Not enough information c. Should this model be used to predict the mean value of Y when X equals 0? ?Yes O No 0 Not enough information Click to select your answer.Explanation / Answer
Since the model has been calibrated for the x-values in the range of 4 to 26
General Rule: If the data point lies in the range then you can use the model otherwise you should not use the model
a) x = 5
Yes, since it lies in the range of [4,26]
b) x = -5
No, since it doesn't lie in the range of [4,26]
c) x =0
No, since it doesn't lie in the range of [4,26]
d) x = 25
Yes, since it lies in the range of [4,26]
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