Examples Example 1. A company that manufactures light bulbs claims that a particular type of light bulb will last 850 hours on average with standard deviation of 50. A consumer…
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Examples Example 1. A clinical dietician wants to compare two different diets, A and B, for diabetic patients. She hypothesizes that diet A (Group 1) will be better than diet…
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Examples Example 1. A company markets an eight week long weight loss program and claims that at the end of the program on average a participant will have lost 5…
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Version info: Code for this page was tested in Stata 12. The tobit model, also called a censored regression model, is designed to estimate linear relationships between variables when there…
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Version info: Code for this page was tested in Stata 12. Truncated regression is used to model dependent variables for which some of the observations are not included in the…
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Version info: Code for this page was tested in Stata 17. Zero-inflated negative binomial regression is for modeling count variables with excessive zeros and it is usually for over-dispersed count…
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Version info: Code for this page was tested in Stata 12. Zero-inflated poisson regression is used to model count data that has an excess of zero counts. Further, theory suggests…
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Version info: Code for this page was tested in Stata 12. Zero-truncated negative binomial regression is used to model count data for which the value zero cannot occur and when…
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Version info: Code for this page was tested in Stata 12. Zero-truncated poisson regression is used to model count data for which the value zero cannot occur. Please Note: The…
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Table 10.1, page 327. Note: The noadjust option suppresses the actuarial adjustment. use https://stats.idre.ucla.edu/stat/stata/examples/alda/data/teachers, clear generate event = ~censor ltable t event, noadjust Beg. Std. Interval Total Deaths Lost Survival…
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