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Explain the correlation coefficient of determination. (15 points)
I'm not sure what the questions is asking me to do. Is it related to the previous questions which are:
Module 9 Application Submit at the end of Week 9. Correlation First, please review the Calculating Correlations Using Excel YouTube video. Once you have viewed this correlation example using Excel, use the data from the data sheet and answer the following questions and utilize the seven-step process where appropriate. 1. Perform a Pearson Product Moment Correlation on the following comparisons: (15 points) a. height vs. weight ('1 = .05/2 b. weight vs. age 0': = .01/2 c. height vs. shoe size ('1 = .02/2 Problem 1a: height vs. weight m1: Step 2: Step 3: Step 4: Step 5: Step 6: Step 7: Ha:__p_ _= 0 Ha: _p_ __;t 0 Alpha level = _.05)'2=.025_ Sampling distribution is gr: _n-2 = 30-2 = 28 Decision Rule: I will reject the Ho if the |_robs_| value falls at or beyond the LEQHLI of _0.361_, otherwise I will fail to reject Calculation: \\_robs_! = _0.534_ Summary: Since the |_robs_| of_0.534 _is greater than_ the LCGDUJ of _0.361 . I therefore reject the Ho. Conclusion: Since _rejection_ occurred, I conclude _that the relationship between them is signicant. Problem 1b: weight vs. age Step 1: Ho: _p_ _= 0 Ha: _p_ at 0 Step 2: Alpha level = _.01{2=.005_ Step 3: Sampling distribution is lit; _ = 30-2 = @ Step 4: Decision Rule: I will reject the Ho if the |_robs_| value falls at or beyond the lJGLlLl of _0.217_, otherwise lwiII fail to reject Step 5: Calculation: \\_robs_! = _0.5341_ Step 6: Summary: Since the |_robs_| of _0.5341_ |_r,cr;it_| of _0.217_, I therefore reject the Ho. is greater than the Step 7: Conclusion: Since _rejection_ occurred, I conclude _that the relationship between them is signicant. Problem 1c: height vs. shoe size m1: Ho:__p_ _= _0_ Ha: _p_ at 0 Step 2: Alpha level = _.02l2=.01 Step 3: Sampling distribution is Qt; _n-2 ll (.0 'P M Step 4: Decision Rule: I will reject the Ho if the |_robs_| value falls at or beyond the |_ccrit_| of _0.463 , otherwise I will fail to reject Step 5: Calculation: \\_robs_/ = _ 0.4649 Step 6: Summary: Since the |_robs_| of _0.4649 _is greater than the Lccrit_| of 0.463 I therefore reject the Ho. Step 7: Conclusion: Since _rejection_ occurred, I conclude _that the relationship between them is significant. 2. Explain the correlation coefficient of determination. (15 points)
