Question

Please help! Fan and Medal!! Question below

Answer 1

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 2

@Asevilla5 @satellite73

Answer 3

@amistre64

Answer 4

@Bookworm14

Answer 5

@stefrheart

Answer 6

I'm thinking A but i'm not positive

Answer 7

what is your regression line?

Answer 8

I don't understand what you're asking

Answer 9

when we have a set of data, we can develop a linear model by some fancy stats calculating

Answer 10

Do you have a graphing calculator with you?

Answer 11

No but I always use Desmos online

Answer 12

can you have desmos give you a linear regression model?

Answer 13

excel can do it

Answer 14

I figured it out. It's D. Thanks though! Can y'all help with another?

Answer 15

Desmos cannot do a linear regression line..

Answer 16

Brenda made a scatter plot with the following data:


Number of years (x) 6 2 4 7 1 9 3 8 5
Amount of radioactive sample (in grams) (y) 0.15625 2.5 0.625 0.078125 5 0.01953125 1.25 0.0390625 0.3125


Which statement is correct about the scatter plot for the data?
It will show a positive linear relationship between x and y.

It will show a negative linear relationship between x and y.

It will show a positive exponential relationship between x and y.

It will show a negative exponential relationship between x and y.


I'm thinking B, but I wanted to verify.

Answer 17

your first data set seems to be a linear all by itself

Answer 18

So I am correct by answering B?

Answer 19

define what a correlation coeff is

Answer 20

how closely a best fit curve, fits the data

Answer 21

id say its pretty close to 1 if it aint equal to it

Answer 22

we have a negative slope ....

Answer 23

Are you finished?