Question

A scatter plot contains a trend line with a slope of -1/10. Does this trend line illustrate a correlation?
A. Yes, there is a positive correlation.
B. Yes, there is a negative correlation.
C. No, there is no correlation.
D. There is not enough information.

Answer 1

I think it is negative, but I am not sure if I understand.

Answer 2

rise/run, so -1/10 means go down 1, over 10.

Answer 3

Slope= Rise over Run
It's A

Answer 4

It's not a.

Answer 5

Oh it isn't? My bad.

Answer 6

Going down, not up.

Answer 7

Yeah yeah, then it's B.

Answer 8

Thought so, thank you.

Answer 9

Good job jcpd

Answer 10

@jcpd910 @nickmifsud1223

One more, if you don't mind?


A scatter plot contains a trend line that crosses through points (-1, 7) and (1, 3). Does this trend line illustrate a correlation?
A. Yes, there is a positive correlation.
B. Yes, there is a negative correlation.
C. No, there is no correlation.
D. There is not enough information.

(Again, I know how to graph these two points, but I do not know how to define the correlation?)

Answer 11

I believe it is a negative correlation.

Answer 12

You're correct! It's B.

Answer 13

It's kinda dumb how they say a trend line. It's just a line, so you just need to find the slope.

Answer 14

a scatter plot with no correlation, aka a bunch of points all over the place would have no trend line.

Answer 15

^