Question

An equation was used to predict the number of possible enrollments in an afterschool program for the first 6 months of the year. The actual enrollments are also listed.


Actual enrollment 55 80 95 100 115 90
Predicted enrollment 75 80 85 90 95 100


The sum of the residuals is ______.

Answer 1

Help please Medal and Fan!

Answer 2

@Jaynator495 @SyedMohammed98 @Uri

Answer 3

hey

Answer 4

Hi

Answer 5

do you know what a residual is?

Answer 6

Nope

Answer 7

a residual is like the margin of an error in like an estimate or so

Answer 8

ok

Answer 9

so all we have to do in this question is find the error in the estimates

Answer 10

and add all of them together

Answer 11

Ok

Answer 12

so for the first one we have 75 predicted enrollment and 50 enrollment

Answer 13

we have -25 residual so far

Answer 14

Alright

Answer 15

remember we have to add all of these numbers in the end

Answer 16

for the second one the numbers are the same so we have 0 residual

Answer 17

btw i made a mistake the first one is 20 residual

Answer 18

Ok so the first one is 20 and the seond 0?

Answer 19

the third one we have 85 predicted and 95 actual

Answer 20

yes to your question

Answer 21

Ok

Answer 22

so can you try and calculate this one?

Answer 23

95 act. 85 predicted

Answer 24

add those numbers up?

Answer 25

no

Answer 26

we have to subtract them

Answer 27

to find the residual

Answer 28

Oh ok subract all those numbers you gave me and then it will give me the answer?

Answer 29

we have 10 additonal residual for the third one

Answer 30

and no to your question

Answer 31

Ok

Answer 32

so we have 20,0,and 10 so far

Answer 33

we have to find the SUM of all the residuals

Answer 34

mhm

Answer 35

So adding

Answer 36

what about 100 act. and 90 predicted

Answer 37

yes to your question

Answer 38

we have 10 residual

Answer 39

so 20,0,10 and 10 so far

Answer 40

40

Answer 41

so far yes

Answer 42

Ok

Answer 43

the next one is also 10

Answer 44

so 20,0,10,10,and 10

Answer 45

Wow ok lol its 50 now

Answer 46

the last one's residual is also 10

Answer 47

so the equation we have now is 20+0+10+10+10+10=?

Answer 48

60!

Answer 49

NICE!

Answer 50

tell me if i was right ok?

Answer 51

wait lemme just tag someone and let them proofread this ok?

Answer 52

@peachpi

Answer 53

Ok

Answer 54

So the answer is 60

Answer 55

yes

Answer 56

@paki

Answer 57

Ok

Answer 58

Nope the asnwer was wrong Oh well

Answer 59

what was the answer?!

Answer 60

idk the test doesn't give it to me it just says its wrong