An engineer wants to predict the value for y when x = 4.5, using the following data
Question:
a. Construct a scatterplot of the points (x, y).
b. Should the least-squares line be used to predict the value of y when x = 4.5? If so, compute the leastsquares line and the predicted value. If not, explain why not.
c. Construct a scatterplot of the points (x, z), where z = ln y.
d. Use the least-squares line to predict the value of z when x = 4.5. Is this an appropriate method of prediction? Explain why or why not.
e. Let zÌ denote the predicted value of z computed in part (d). Let yÌ = ezÌ . Explain why yÌ is a reasonable predictor of the value of y when x = 4.5.
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Related Book For
Question Posted: