Data Analysis Exercise



Data Analysis Exercise

Problem A: Attitude-Intention-Behavior about Exercise

Hypothesis

H1: Increase in behavioral intention should translate to improvements in behavior.

H2: There is a significant difference in the intention towards exercise between the control and treatment group.

Results

The results from obtained from table 1 shows an paired mean difference M = 1.013, SD = 1.458. From these results it can be determined that there is a significant mean difference before and after the training of the treatment group. Paired sample t - test statistics shows highly significant t - values [t = 8.784, p = 0.000] which certainly leads to the rejection of the null hypothesis. Also, the mean difference between the attitudes towards exercise lies within the 95% confidence interval i.e. M = 1.013 which lies between [0.785, 1.240].

Table 2 shows the results of the 2nd hypothesis which represents any significant amount of difference within the control and treatment groups. The results shows significant t - test results in both the conditions where equal variances are assumed and also in which it is not assumed i.e. [t = -2.680, p = 0.008]. This certainly leads to the rejection of the null hypothesis 2. Simultaneously, the mean difference lies within the confidence interval which has shown a fair decrease in the variability of the intentions of the people towards exercise.

Discussion

From the above results it has been determined that the initial null hypothesis has been rejected and we can conclude that increase in behavioral intention should translate to improvements in behavior. We can analyze that the 5 day workshop for the intention of increasing exercise has certainly worked before and after the 5 day workshop. The 2nd hypothesis verified the perception of significant changes occurred in the intentions towards exercising. The initial 5 day workshop has created a significant impact in making the people analyze that exercise is significantly important for health. The treatment group who attended the workshop had increased exercising to a great extent in comparison to the people in the controlled group.



Problem B: Meta-memory among the elderly

Hypothesis

H1: Elderly people have poorer knowledge about their memory ability compared with younger people.

Results

Table 3 in the problem B determines the research hypothesis that whether elderly people have poorer knowledge about their memory ability compared with younger people. There are two different ways it has been determined through different comparisons. ANOVA shows that there is a significant difference in the estimated number of words predicted to be recalled with respect to the age group. The f - statistic shows that [f = 2.644, p = 0.000] which is statistically significant and leads to the rejection of the null hypothesis.

Similarly, actual numbers of words recalled by the elder people were also determined in table 3 which shows statistically insignificant results. There is a significant difference in the actual number of words recalled by the elder people in comparison with the younger people [f = 0.954, p = 0.594]. We cannot reject the null hypothesis in this case fairly less variation has been observed in ...