izequiz probGuid-ONAPCDA8010 100000039M0941 100600008kctx dcullen-0001 8ckem &ck
ID: 3359114 • Letter: I
Question
izequiz probGuid-ONAPCDA8010 100000039M0941 100600008kctx dcullen-0001 8ckem &ck;=rn 1510284312348 0AA - ervlet/quiz?quiz action takeQu A Aa 3. Scatter plots and estimating correlation The Pearson correlacions have been computed for five sets of sample scores and are shown in ascending order in the folowing tabe: 92 -0.76 0.00 0.66 0 The following are scatter plots (including the regression line) for each set of scores. (Sales for the X- and Y-axes are the same on all five piots.) r= [0.82 ]Explanation / Answer
The direction of a correlation is eitherpositive or negative. In a negative correlation, the variables move in inverse, or opposite, directions. In other words, as one variable increases, the other variable decreases.
For positive correlation the variables move in same directions. In other words, as one variable increases, the other variable also increases.
More points on the line passing through all point more is the correlation.
Based on this answer is as below (going towards right and then down)
1.r=-0.92
2. r=0.66
3. r=0.82
4. r=0.00
5. r=-0.76
For r=0.82, r^2=0.6724
Which means answer is 67%
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