Northern flying squirrels eat lichen and fungi, which makes for a relatively low quality diet. The authors
Question:
a. Construct a scatterplot of these data.
b. Find the equation of the least-squares regression liane. Based on this line, what would you predict nitrogen retention to be for a flying squirrel whose nitrogen intake is 0.06 grams? What is the residual associated with the observation (0.06, 0.01)?
c. Look again at the scatterplot from Part (a). Which observation is potentially influential? Explain the reason for your choice.
d. When the potentially influential observation is deleted from the data set, the equation of the leastsquares regression line fit to the remaining five observations is y^ = 20.037 + 0.627x. Use this equation to predict nitrogen retention for a flying squirrel whose nitrogen intake is 0.06. Is this prediction much different than the prediction made in Part (b)? y^ = 0.00062, small difference
Step by Step Answer:
Statistics The Exploration & Analysis Of Data
ISBN: 9780840058010
7th Edition
Authors: Roxy Peck, Jay L. Devore