Which is the best estimate for the value of r in the scatter plot? a. -1 b. -0.9 c. 0.2 d. 1

The best estimate for the value of r in the scatter plot is B. -0.9.

The correlation coefficient (denoted by r ) measures the strength of a linear relationship between two variables.

A scatter plot used to show the relation ship between variables.

If the points on the scatter plot appears to form a line that slants down from left to right, then there is a negative relationship.

So value of r must be negative.

Also we can draw a line that fits through the data, so it indicates strong relationship.

The r value for strong negative correlation must be lower than -0.7 .

Also its not perfect correlation so r cannot be -1.

So the only option is r= -0.9.

Thus, The best estimate for the value of r in the scatter plot is B. -0.9.

Learn more about correlation:

link

I would say choice B is the best answer. The points all are very close to a single straight line that has negative slope, so the correlation coefficient r is going to be fairly close to -1. It won't be perfectly at r = -1 because all points need to be on the same straight line for that to happen. Side Note: without actual numbers for the coordinates, it's impossible to calculate the true value for r.

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13

hey seth! : )

i’m not 100% sure, but i think it’s b

hope this ya : p

miss u!

- nicole