Exercise 16

1 . Precisely what are the two groups whose results are reflected by t percentages in Desks 2 and 3? The group analyzed was twenty-one elderly women with an average age of seventy seven. Ninety percent of the participants had a number of chronic diseases. Table two represents the programs results on cardiovascular risk elements and stand 3 signifies program effects on well being behaviors. The t ratios reflected upon these desks represents the test results between your pretest and 3 months and again between pretest and 6 months.

2 . Which in turn t proportion in Stand 2 presents the greatest comparative or standardized difference between the pretest and 3 months results? Is this big t ratio statistically significant? Provide a rationale for your answer. The t proportion of four. 14 (total risk score) represents the very best relative involving the pretest and 3 months effects. This big t ratio is statistically significant because from this study, p is less than 0. 05.

3. Which will t proportion listed in Table 3 signifies the smallest relative difference between pretest and 3 months? Is t proportion statistically significant? What does this kind of result indicate? The t ratio -0. 65 (Stress management) presents the smallest family member difference involving the pretest and 3 months. The ratio is not considered statistically significant because the worth is not really denoted simply by an asterisk and p is not less than 0. 05.

some. What are the assumptions pertaining to conducting a t-test for dependent teams in a research? Which of those assumptions do you think were achieved by this examine? The assumptions for the t-test pertaining to dependent groupings are: the distribution of scores can be regular or roughly normally described, the relied variables happen to be measures at interval or perhaps ratio amounts, the groups examined pertaining to difference will be dependent based on matching or perhaps subjects serving as their own control, as well as the difference between the paired results are 3rd party. The dependent variables are measured with t percentages from pretest to 3 a few months and coming from pretest to 6 months. Also, the...