Question

Which is the best estimate of the residual when x = 3?

Answer 1

what does residual mean?

Answer 2

The vertical distance between a data point and the graph @surjithayer

Answer 3

i Know the vertical distance is postive

Answer 4

so that eliminates a and b

Answer 5

approximately how much is the length of below red segment ?

Answer 6

Why did you do that?

Answer 7

didn't you say

residual = vertical distance between data point and graph

?

Answer 8

yes

Answer 9

ooooooh

Answer 10

so can you guess its length

Answer 11

but what about x=3?

Answer 12

basically you need to walk on x-axis and go to the position x=3
then look above

Answer 13

ooooh

Answer 14

you see that the height of data value is 5
and the height of graph is about 3.5 ?

Answer 15

whats the difference ?

Answer 16

Yes i do i am having such a hard time doing this i am thinking too much about it

Answer 17

thats okay
just takes practice of 1-2 problems
so whats the difference ?

Answer 18

5 - 3.5 = ?

Answer 19

OOOH

Answer 20

1.5!

Answer 21

ofc difference means to subtract i thought you meant the difference on the graph like whats different (i was thinking too hard about that)

Answer 22

oh sry about that lol i should have been more specific

Answer 23

Thanks so much!

Answer 24

its ok lol ! :)

Answer 25

:)