Question

can someone please help me out this ><

Answer 1

Coef means: coefficient.

the coef for the constant term (the y intercept) is given

the coef for the variable term (the slope) is given

Answer 2

hmm, it appears that they already GIVE you the regression equation where it says: "The regression equation is"

Answer 3

@ganeshie8 if u get a second lmk if u could help me out with this one ><

Answer 4

would it be: 0.92 + 2.06x ?

Answer 5

almost, it says to round to 3 decimal places

Answer 6

you picked the right numbers, you just need to round differently

Answer 7

so like 0.920 + 2.060x ?

Answer 8

look at the table again

Answer 9

the constant is 0.919
and the coefficient is 2.0647, which rounds to 2.065

Answer 10

ok and then for the next question do i just plug in 25 C to get 52.42 or do I use the graph?

Answer 11

*table

Answer 12

use the function, let x = 25

Answer 13

so 52.544 ?

Answer 14

thank you so much @Vocaloid you're the only one who has been able to help me on this one lol.
it goes on to ask: the percent of the variation in beak heat loss is explained by the straight-line relationship with temperature is ______. Round your answer to one decimal place.

so it would it be 83.6% ?

Answer 15

yup!

Answer 16

awesome and then the last one says: Using the information in Figure 4.9, the correlation r between beak heat loss and temperature is ______. Round your answer to 3 decimal places.

Is it 4.507??

Answer 17

nope

they give you r^2, just take the square root of that to find r

Answer 18

wait which is r^2?

Answer 19

@Vocaloid

Answer 20

R-Sq

Answer 21

so change it to 0.824 and square root to get 0.908 ?

Answer 22

yes

Answer 23

Thank you so much :)