Statistic Question Paper 
Name: ____________ Date:
______________________________________________________________________________
□ EXERCISE 31
1. What are the two groups whose results are reflected by the t ratios in Tables 2 and 3?
The two groups with results on the effects on cardiovascular risk factors and the programs effective on health behavior have paid t-ratios
2. Which t ratio in Table 2 represents the greatest relative or standardized difference between the pretest and 3 months outcomes? Is this t ratio statistically significant? Provide a rationale for your answer. t-ratio of 2.58 for triglyceride measuring the programs effect on cardiovascular risk factors has the greatest SD of 44.1 between the pretest and 3 months outcome. The t-ratio has an asterisk marking it as a significant ratio.
3. Which t ratio listed in Table 3 represents the smallest relative difference between the pretest and 3 months? Is this t ratio statistically significant? What does this result mean? t-ratio of -0.65 for stress management measuring the programs effects on health behavior has the smallest relative difference between the pretest and the 3 months test. But the t ratio is not significant as per the table because it is not marked with an asterisk.
4. What are the assumptions for conducting a t-test for dependent groups in a study? Which of these assumptions do you think were met by this study?
The sample of differences (di’s) should be normal
The samples should be dependent and it should be possible to identify specific pairs.
The two samples must be of equal size
5. Compare the 3 months and 6 months t ratios for the variable Exercise from Table 3. What is your conclusion about the long-term effect of the health-promotion intervention on Exercise in this study?
My conclusion is that while the numbers for exercise go up after 3 months it falls after 6 months and the pattern of falling will continue from that point on.
6. What is the smallest,
______________________________________________________________________________
□ EXERCISE 31
1. What are the two groups whose results are reflected by the t ratios in Tables 2 and 3?
The two groups with results on the effects on cardiovascular risk factors and the programs effective on health behavior have paid t-ratios
2. Which t ratio in Table 2 represents the greatest relative or standardized difference between the pretest and 3 months outcomes? Is this t ratio statistically significant? Provide a rationale for your answer. t-ratio of 2.58 for triglyceride measuring the programs effect on cardiovascular risk factors has the greatest SD of 44.1 between the pretest and 3 months outcome. The t-ratio has an asterisk marking it as a significant ratio.
3. Which t ratio listed in Table 3 represents the smallest relative difference between the pretest and 3 months? Is this t ratio statistically significant? What does this result mean? t-ratio of -0.65 for stress management measuring the programs effects on health behavior has the smallest relative difference between the pretest and the 3 months test. But the t ratio is not significant as per the table because it is not marked with an asterisk.
4. What are the assumptions for conducting a t-test for dependent groups in a study? Which of these assumptions do you think were met by this study?
The sample of differences (di’s) should be normal
The samples should be dependent and it should be possible to identify specific pairs.
The two samples must be of equal size
5. Compare the 3 months and 6 months t ratios for the variable Exercise from Table 3. What is your conclusion about the long-term effect of the health-promotion intervention on Exercise in this study?
My conclusion is that while the numbers for exercise go up after 3 months it falls after 6 months and the pattern of falling will continue from that point on.
6. What is the smallest,