ENGR.ECONOMIC ANALYSIS
ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN: 9780190931919
Author: NEWNAN
Publisher: Oxford University Press
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6. (a) Suppose that n = 100 i.i.d observations for (Y, X,) yield the following results where SER stands
for the standard error of the regression:
Ý
32.1+66.8X, SER=15.1, R2 = 0.81
(15.1) (12.2)
Another researcher is interested in the same regression, but he makes an error when he enters the
data into his regression program: He enters each observation twice, so he has 200 observations.
Using these 200 observations, what results will be produced by his program? Write it in the
following format:
=
9+X, SER=
(b) Suppose that a random sample of 200 twenty-year-old-men is selected from a population and that
these mens height and weight are recorded. A regression of weight on height yields Weight
-99.41 +3.94 x Height. Suppose further that instead of measuring weight and height in pounds
and inches, these variables are measured in centimeters and kilograms. What are the regression
estimates from this new centimeter-kilogram regression? (1 inch= 2.54 cm, 1 pound=0.45 kg)
=
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Transcribed Image Text:6. (a) Suppose that n = 100 i.i.d observations for (Y, X,) yield the following results where SER stands for the standard error of the regression: Ý 32.1+66.8X, SER=15.1, R2 = 0.81 (15.1) (12.2) Another researcher is interested in the same regression, but he makes an error when he enters the data into his regression program: He enters each observation twice, so he has 200 observations. Using these 200 observations, what results will be produced by his program? Write it in the following format: = 9+X, SER= (b) Suppose that a random sample of 200 twenty-year-old-men is selected from a population and that these mens height and weight are recorded. A regression of weight on height yields Weight -99.41 +3.94 x Height. Suppose further that instead of measuring weight and height in pounds and inches, these variables are measured in centimeters and kilograms. What are the regression estimates from this new centimeter-kilogram regression? (1 inch= 2.54 cm, 1 pound=0.45 kg) =
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