coefficent and correlation

Mathematics
Tutor: None Selected Time limit: 1 Day

use the data given to determine the line of best fit and the correlation coefficient

# of hrs excersing per wk   8  12  24  5  15  16  10  20  13  7

weight loss                        10  15  32  2  16  19  10  25  15  11

Aug 28th, 2015

Hi there! Thank you for the opportunity to help you with your question!

The line of best fit is: y -1.3805x - 2.4465

The correlation coefficient R^2 is given by 0.94916


Please let me know if you need any clarification. Always glad to help!
Aug 28th, 2015

this is homework i have to show work, any chance you can show me what to write?

Aug 28th, 2015

What class is this?


Aug 28th, 2015

trig

Aug 28th, 2015

The issue is that, in order to determine the line of best fit, you need to know linear algebra, I don't know if you have seen that. The concept of Linear Regression (https://en.wikipedia.org/wiki/Linear_regression) requires minimizing a problem in linear algebra, with matrices. Have you seen any of that?

Other than that, the only other way I know how to do is by plotting it on a program like Excel or using a graphing calculator. Here, I used Excel

Aug 28th, 2015

ok thank you! any chance you know how to do this question?

based on the following data:

35,33,48,41,45,38,30,34,29,25

12,24,37,48,50,42,36,50,34,30

a)between which 2 scores are 2 standard deviations from the mean?

b)which score report represents 3 deviations above the mean?

c)which score is at the 30.9 percentile?

d)between which two scores does 68.2% of the data fall between​


Aug 28th, 2015

Can you make a new question? We are not supposed to discuss different questions on this follow up, sorry!


Aug 28th, 2015

i ran out of questions, cant you just try pleasee

Aug 28th, 2015

I can't unfortunately, it's the website policy...I can get kicked out for answering a new question in a follow up discussion, I am really sorry...

Aug 28th, 2015

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