Question

hello:) Please help me:)

Answer 1

ok?

Answer 2

The table below shows the air temperature, in degrees Celsius, and the number of snowboards sold in Amy's store:


Temperature (degrees Celsius) (x)

1

-1

-2

-3

0

-4

2

Number of snowboards sold (y)

10

24

31

38

17

45

3



What is the correlation coefficient for the data, and what does it represent?
0; it represents no correlation between x and y

1; it represents a perfectly linear positive correlation between x and y

1; it represents a perfectly linear negative correlation between x and y

-1; it represents a perfectly linear negative correlation between x and y

Answer 3

whats the equation for the correlation coefficient again, i forget?

Answer 4

The value of R is 1. This is a strong positive correlation,

The value of R2, the coefficient of determination, is 1.

Answer 5

did you calculate that using the equation?

Answer 6

i just dont know either if putting d or c

Answer 7

Use this site to help you get the correlation coefficient http://www.socscistatistics.com/tests/pearson/Default2.aspx

Answer 8

yep sr mojojojo:0

Answer 9

that doesnt help:c

Answer 10

i lready know the correlation coefficient but i just dont know if putting either D or C

Answer 11

The value of R is -1. This is a strong negative correlation, which means that high X variable scores go with low Y variable scores (and vice versa).

The value of R2, the coefficient of determination, is 1. Courtesy of this site http://www.socscistatistics.com/tests/pearson/Default2.aspx

Answer 12

dude i know -.-

Answer 13

-1 is perfectly negative.

Answer 14

but that still dont give me the answer

Answer 15

are you sure is not c?

Answer 16

Does this help, it came from my Data Management Book.

Answer 17

yeah thanks

Answer 18

can you help me with 2 more?

Answer 19

i will tag you

Answer 20

Depends on the Difficulty, havent done this in a while

Answer 21

i'll have a look though