Deals on Stata book

Saturday, October 31, 2009

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A gentle introduction to Stata 

This is a perfect book for beginners.

There are 13 chapters:
1 Getting started
2 Entering data
3 Preparing data for analysis
4 Working with commands, do-files, and results
5 Descriptive statistics and graphs for one variable
6 Statistics and graphs for two categorical variables
7 Tests for one or two means
8 Bivariate regression and correlation
9 Analysis of variance
10 Multiple regression
11 Logistic regression
12 Measurement, reliability, and validity
13 Appendix: What's next?

I like this book because it covers concepts related to statistics as well as their application in a single book. It also tells you how to interpret the results obtained from the Stata output. For example, on page 178, after running a multiple regression:

regress csat expense percent income high college

the results with multiple regression equation are shown :

predicted csat = 851.56 + .00335 expense – 2.618 percent + .0001 income + 1.63 high + 2.03 college

This book also provides helpful interpretations:
Controlling for four other variables weakens the coefficient on expense from –.0223 to .00335, which is no longer statistically distinguishable from zero. The unexpected negative relationship between expense and csat found in our earlier simple regression evidently is spurious, and explained by other predictors.
Only the coefficient on percent (percentage of high school graduates taking the SAT) attains significance at the .05 level. We could interpret this “fourth-orer partial regression coefficient” (so called because its calculation adjusts for four other predictors) as follows.
This book includes many graphs, and when I learn stats I like to see what the results look like. This helps me to understand and remember the concepts I have studied. Visit A gentle introduction to Stata and find out today's deal on Amazon.