Question

The table below shows the velocity y, in miles per minute, of a toy car at different times x, in minutes:

Time (x)
(minutes) | 10 | 20 | 30| 40
------------------------------------
Velocity (y)
(miles) | 0.2| 0.8 | 0.1| 0.4

Part A: What is the most likely value of the correlation coefficient of the data in the table? Based on the correlation coefficient, describe the relationship between time and velocity of the toy car.
[Choose the value of correlation coefficient from -1, 1, -0.04, 0.99]

Answer 1

Part B: What is the value of the slope of the graph of velocity versus time between 10 minutes and 20 minutes, and what does the slope represent?

Part C: Does the data in the table represent correlation or causation? Explain your answer.

Answer 2

@tHe_FiZiCx99

Answer 3

I gtg to bed, @tester97 is beast ~

Answer 4

At Math*

Answer 5

thanks anywat i know its late -.-

Answer 6

anyway*

Answer 7

Yeah! This is the Part III for FLVS alg I xD I remember it, I haven't seen this in a while

Answer 8

lol yesssss this is the last question and im DONE!

Answer 9

actually no that was all wrong

Answer 10

hold on

Answer 11

ok

Answer 12

This all I got maybe @dan815 can help

B. (y2 - y1)/(x2 - x1) = (0.8 - 0.2)/(20 - 10)
= 0.6/10 = 0.06

the slope indicates that the velocity is increasing at a relatively slow rate from 10 mins to 20 mins.

C. Zero correlation

Answer 13

i appreciate all your help though!

Answer 14

Welcome :)

Answer 15

http://mathbits.com/MathBits/TISection/Statistics2/correlation.htm
correlation coeff formula is there use it

Answer 16

woahh that formula looks confusing..

Answer 17

im getting no where trying to figure this out on my own

Answer 18

@ganeshie8

Answer 19

fill this table :-