Question

24. You use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is -0.015. How confident can you be that your predicted value will be reasonably close to the actual value?

My answer: I would be pretty confident that my predicted value would be close to the actual value because my correlation coefficient is -0.015, and is a relatively small number. The bigger the number, the farther away.

I don't really understand the question, so anything helps! My answer above is just me guessing from what I have previously learned, since we haven't really covered this subject.

Answer 1

We disagree.
http://www.dmstat1.com/res/TheCorrelationCoefficientDefined.html

Answer 2

I disagree with Lynn, the student who posted the question.

Answer 3

I actually AGREE with Lynn. Even though Lynn guessed, her answer is actually CORRECT!!!!

Answer 4

sure, let's all chime in

correlation coefficient values are ... -1 ≤ cc ≤ 1

a greater absolute value means better correlation

values close to zero (like -.015) indicate very little correlation

Answer 5

Monika -- what's your background that enables you to disagree with a retired university professor?

Answer 6

Thank you everyone who chimed in! I ended up getting a 3 out of 4 for my answer!!

Answer 7

Ms. Sue, what let’s you tell someone that they are not allowed to disagree with someone?

Answer 8

Ms. Sue you don’t have the right to do that

Answer 9

yikes Ms. Sue being is rude and stinky

Answer 10

i always felt bad for ms.sue for being disliked when she was tryna help but now i see why everyone dislikes her.