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# SPSS Experimental Analysis - Diet of Rats

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A researcher interested in studying the effects of three experimental diets with varying fat contents on the total lipid (fat) level in plasma collected the data in the file FatInDiet.txt.

Fifteen male subjects who were within 20 percent of their ideal body weight were grouped into five blocks according to age. Within each block the experimental diets were randomly assigned to the three subjects. The outcome measure was the total reduction in lipid level after the subjects were on the diet for a fixed period of time.

The columns of the data set correspond to (1) reduction in lipid level; (2) block (1=15-24 years; 2=25-34 years; 3=35-44 years; 4=45-54 years; and 5=55-64 years; and (3) fat content of diet (1=extremely low; 2=fairly low; and 3=moderately low).

Perform a complete analysis of the completely randomized block experiment to determine if fat content affects the mean reduction in lipid level of male subjects. As part of your analysis determine if there is evidence that the effect of diet varies by age of the subject. Report in your analysis confidence intervals comparing the difference in mean lipid reduction between all pairs of treatment conditions for the oldest group of patients in the study.

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#### Solution Preview

SPSS Experimental Analysis
A researcher interested in studying the effects of three experimental diets with varying fat contents on the total lipid (fat) level in plasma collected the data in the file FatInDiet.txt.

Fifteen male subjects who were within 20 percent of their ideal body weight were grouped into five blocks according to age. Within each block the experimental diets were randomly assigned to the three subjects. The outcome measure was the total reduction in lipid level after the subjects were on the diet for a fixed period of time.

The columns of the data set correspond to (1) reduction in lipid level; (2) block (1=15-24 years; 2=25-34 years; 3=35-44 years; 4=45-54 years; and 5=55-64 years; and (3) fat content of diet (1=extremely ...

#### Solution Summary

The solution discusses SPSS experimental analysis regarding the diet of rats.

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