In Chapter 7, (Data in Tompkins County Bridges 2014) we found a relationship between the age of

Question:

In Chapter 7, (Data in Tompkins County Bridges 2014) we found a relationship between the age of a bridge in Tompkins County, New York, and its condition as found by inspection. But we considered only bridges built or replaced since 1886. Tompkins County is the home of the oldest covered bridge in daily use in New York State. Built in 1853, it was recently judged to have a condition of 4.57.

image text in transcribed
Dependent variable is Condition
R-squared = 43.4% s = 0.7236
Variable Coefficient
Intercept ……………….. -37.7775
Year ……………………. 0.02190
a) If we use this regression to predict the condition of the covered bridge, what would its residual be?
b) If we add the covered bridge to the data, what would you expect to happen to the regression slope? Explain.
c) If we add the covered bridge to the data, what would you expect to happen to the R2? Explain.
d) The bridge was extensively restored in 1972. If we use that date instead, do you find the condition of the bridge remarkable?
Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Stats Data And Models

ISBN: 662

4th Edition

Authors: Richard D. De Veaux, Paul D. Velleman, David E. Bock

Question Posted: