The two questions are clear in the picture. Exercise HOMEWORK ASSIGNMENT ONE: SI
ID: 3341106 • Letter: T
Question
The two questions are clear in the picture.
Exercise HOMEWORK ASSIGNMENT ONE: SIGNIFICANT OR NOT SIGNIFICANT? CORRELATIONS Coffee 346* ·049 38 GPA 845** 002 38 294 085 38 Pearson Correlation Sig. (2-tailed) 38 Coffee Pearson Correlation 346* -049 38 Sig. (2-tailed) 38 294 085 38 GPA Pearson Correlation 845** Sig. (2-tailed) 002 38 Correlation is significant at the .05 level (2-tailed). 38 ** Correlation is significant at the.01 level (2-tailed). Above are slightly different statistics than what you found in the example in the chapter. Using the example provided in Chapter 10, rewrite the results using the new t p-values and the Pearson correlation coefficients. Make sure that you also include the % of variabil ity in Y that is explained by X. est statistics, including the HOMEWORK ASSIGNMENT TWO: EXERCISING THE OLD GRAY MATTER As this is the part of the course where there is more complexity, this exercise gives you an oppor- tunity to let your imagination go a bit wild, with very little chance of making a fatal mistake that will cost you points (or letter grade) toward your final grade. If you recall that a few chapters back you were given opportunities to exam photos and come up with some variables. In this exercised examine the photograph and put together a multivariate causal model, using at least three indepen- dent variables (IVs) and one dependent variable (DV). In a short paragraph, include (1) your three hypotheses including the null and what direction you might predict the results would go (positive or negative in one-tailed tests) if you had real data to test your hypotheses. 122Explanation / Answer
1) H0: The correlation between IQ and Coffee is not Significant.
Vs
H1: The correlation between IQ and Coffee is Significant.
Here the Pvalue=0.049 indicates the acceptance of a null hypothesis at 5% level of significance. Hence the correlation between IQ and Coffee is not significant.
2) H0: The correlation between IQ and GPA is not Significant.
Vs
H1: The correlation between IQ and GPA is Significant.
Here the Pvalue=0.002 indicates the rejection of a null hypothesis at 5% level of significance. Hence the correlation between IQ and GPA is significant.
3) H0: The correlation between GPA and Coffee is not Significant.
Vs
H1: The correlation between GPA and Coffee is Significant.
Here the Pvalue=0.085 indicates the acceptance of a null hypothesis at 5% level of significance. Hence the correlation between GPA and Coffee is not significant.
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