Question

Algebra 1 help? It has to deal w/ Box and Whisker plots which I have a hard time understanding. :/ A medal and a fan will be given for the help!

Answer 1

@poopsiedoodle may I have some help?

Answer 2

Oh 0___0 ok. Hold on:

Answer 3

wats ur qs :D

Answer 4

The third column is Class C.

Answer 5

o.o I guess the second row is B and the third is C?

Answer 6

Correct

Answer 7

@ikram002p what do you think? :-)

Answer 8

ya the third is C ok ill help u with this :)

Answer 9

Thank you! <3 @ikram002p

Answer 10

Thank your for the help! :)

Answer 11

ohkk but that was helpfull :D

Answer 12

Please don't go @ikram002p ! I still don't understand!

Answer 13

no no lol i wont go XD

Answer 14

Oh thank goodness, I need all the help I can get! XD

Answer 15

ok the mean is the sum of valus devided bye there count
did u got this ?

Answer 16

I got for Class A the mean is 79, correct?

Answer 17

And now I got what poopsie got; 85 and 1/3 for the mean.

Answer 18

i got 80.86
1213/15

Answer 19

Hmm...how did you get that?

Answer 20

100+90+94+100+75+30+94+72+85+87+42+100+90+94+60 =1213

Answer 21

Oh! It's Class A and B i'm supposed to find the mean and Standard Deviation! :D

Answer 22

That's why our second answer is different!

Answer 23

hhh i knw lol but it will help u to get the idea XD

Answer 24

Got it! :)

Answer 25

so for A wat u got ?

Answer 26

For A I got the mean for Class A is 79.
Alright, now how do I get the Standard Deviation?

Answer 27

for standerd deviation u need to find how much the value is away from the mean ill show u how ok ?

Answer 28

Ok!

Answer 29

first find X'-X for all value , s.t X' is the mean

Answer 30

Ok so 79 - ? where would I find the X?

Answer 31

well work on colum A
80+85+87+92+86+90+94+100+75+85+38+72+94+62=1140
X'=1140/15=76

Answer 32

You forgot the 45 XD

Answer 33

Ok so I have 79 and...

Answer 34

Oh!!! WAIT...I SUBTRACT THESE NUMBERS FROM THE MEAN RIGHT?!!?