Question

Can someone help me find the correlation and equations for some graphs I had to make?

Answer 1

Identify the correlation and find the equation for line of best fit you made in the problem above.

Answer 2

I already know that it has a positive correlation but I do not know the equation.

Answer 3

Good morning, Ricardo! What method do you want to use to find the correlation coefficient and the equation of the regression line? Must you calculate the correlation using a formula, or are you allowed to use a calculator such as the TI-84?

Answer 4

I am aloud to use just about anything. It doesn't really require the work, but I do have to have the correct answer. I am not sure how to get the equation for the graph.

Answer 5

Have you a TI-83 or -84 calculator handy?

Answer 6

Uhm, no.. I do not

Answer 7

What resources do you happen to have with you? A statistics textbook? Class handouts? We need to find the formulas for the correlation coefficient, r, and for the coefficients of the regression line.

Answer 8

All I really have is a computer. I am an online student. We really don't get anything and they don't tell us to get materials such as this.

Answer 9

If you're good at Internet searches, you could do a search for "regression line" and another for "correlation coefficient." You'll probably have the formulas you need in just a moment.

Answer 10

Okay! let me try that out

Answer 11

How different from my generation! I'm a retired professor, age 69. Everything came from textbooks back then.

Answer 12

Yeah, and I bet you actually spoke with your teachers. My teachers don't talk to me at all. It really is no fun at all. I basically have to teach myself.

Answer 13

Well, there certainly are big advantages to being able to teach yourself, but I always thought it a gift to be able to ask real, live people questions when I didn't understand something.

Answer 14

Yeah, that's why I use this. Because I can ask other's for help

Answer 15

Actually, I love being on OpenStudy because of the human interaction it affords.

I looked up "regression equation" myself on the 'Net, but (much to my surprise) did not immediately find the formulas necessary to find the regression line coefficients.

Answer 16

Would you look up correlation while I do regression analysis again?

Answer 17

Remember, you're looking for a formula by which, based on your set of data, you can find the correlation coefficient. It's usually referred to as "r".

Answer 18

I tried already, I ether got something that didn't explain it well at all or something that was way to complicated for what I am learning.

Answer 19

Same experience here!
Let me see whether I can find one of my statistics textbooks. in the meantime, why not think of other questions that you and I could discuss?

Answer 20

Let g(x) be the indicated transformation of f(x). Write the rule for g(x).

linear function defined by the table; vertical translation 1.5 units up

Answer 21

This problem seems so easy in comparison to the previous one, it's almost laughable.

Are you good at graphing functions? or at least, at graphing data points?

Answer 22

I am good at graphing data points

Answer 23

Would you mind graphing those 3 points, quickly, using the Draw feature (below)?

Answer 24

umm, i think i can do that

Answer 25

OK. Go ahead. In the meantime I'm going to do a drawing of my own to share with you.