August 2011
Beginner to intermediate
202 pages
5h 45m
English
Content preview from Business Applications of Multiple Regression
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SIMPLE REGRESSION 65
Y- intercept. In simple regression, if the model is significant, the
slope will be significant, and if the model is insignificant, the slope
will be insignificant.
• Lower 95% and upper 95%. This is a 95% confidence interval on
the intercept and slope. It is calculated as the coefficient value ±1.96
times the standard error of that value.
Interpretation
So what do these values tell us? The Significant F value of 0.0001 tells
us the overall model is significant at α = 0.05. The r
2
of 0.2862 tells us
variation in number of employees explains less than 29% of the variation
in salary, a very poor showing. The slope of 0.1108 tells us that for every
one unit increase in the number of employees, the average salary goes up ...
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