a linear regression equation for best fit between the students attendence and the degree of success in school is h= 0.5x +68.5 the correlation coefficient for these data woulde be?
2007-06-13
10:09:18
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6 answers
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asked by
Anonymous
in
Science & Mathematics
➔ Mathematics
1) 0
3)r= -1
4)-1
The answer would be the first choice. Just logically, you can safely assume that student attendance and success in school has some positive correlation (as one increases, the other increases, and vice versa). And this is further confirmed by a positively sloped linear equation. And you can also assume that there is SOME relationship between the two, eliminating choice #2 which implies absolutely no relationship. Choices 3 and 4 assume that it's a negative correlation, meaning as student attendance increases, success would decrease.
2007-06-13 10:14:24 · answer #1 · answered by Kathleen K 7 · 0⤊ 0⤋
Hi,
The answer is #1, 0 < r < 1. When the slope has a positive slope like .5, the r value will be positive.
I hope that helps!! :-)
2007-06-13 10:13:39 · answer #2 · answered by Pi R Squared 7 · 0⤊ 0⤋
If I remember my statistics correctly, it is a positive relation ship (as x increases, so does y). So, r is positive. Since -1
2007-06-13 10:19:28
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answer #3
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answered by cidyah 7
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0⤊
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#1, you have a positive slope.
2007-06-13 10:12:47 · answer #4 · answered by cattbarf 7 · 0⤊ 0⤋
im done with hs sorry..................
2007-06-13 10:11:43 · answer #5 · answered by LDshayne 1 · 0⤊ 1⤋
Please define your variables.
2007-06-13 10:19:34 · answer #6 · answered by Jared W 2 · 0⤊ 0⤋