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Elementary,Middle School,High School,College,University,PHD
| Teaching Since: | May 2017 |
| Last Sign in: | 398 Weeks Ago, 2 Days Ago |
| Questions Answered: | 66690 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
The article “Characterization of Highway Runoff in Austin, Texas, Area” (J.of Envir. Engr., 1998: 131– 137) gave a scatterplot, along with the least squares line, of x = rainfull volume (m3 ) and y = runoff volume (m3 ) for a particular location. The accompanying values were read from the plot.

a. Does a scatterplot of the data support the use of the simple linear regression model?
b. Calculate point estimates of the slope and intercept of the population regression line
c. Calculate a point estimate of the true average runoff volume when rainfall volume is 50.
d. Calculate a point estimate of the standard deviation s.
e. What proportion of the observed variation in runoff volume can be attributed to the simple linear regression relationship between runoff and rainfall?
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