# The data listed in the following table are from a study by Benignus and others (1981). Blood and brain levels

## Question:

a. Provide a scatter diagram, with BLOODTOL as the response and PPM_TOLU as the predictor.

b. Compute least-squares estimates of the straight-line regression coefficients. Plot the line on the scatter diagram.

c. Repeat part (a) for the natural logarithms LN_BLDTL and LN_PPMTL, the respective natural logarithms of BLOODTOL and PPM_TOLU.

d. Repeat part (b) for the natural logarithms.

e. Which transformation leads to the best representation of the data? Note in your comments the validity of the regression assumptions.

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## Step by Step Answer:

**Related Book For**

## Applied Regression Analysis and Other Multivariable Methods

**ISBN:** 978-1285051086

5th edition

**Authors:** David G. Kleinbaum, Lawrence L. Kupper, Azhar Nizam, Eli S. Rosenberg

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