Question

May someone PLEASE explain if I did this math problem correctly?

http://img31.imageshack.us/img31/3674/idcboutlife.jpg

I got 47, correct?

Answer 1

can't you post screenshots? how come it's always blocked login?

Answer 2

can you note see it?

Answer 3

nope

Answer 4

http://s11.postimage.org/80xv7plrl/idcboutlife.jpg

Answer 5

how about that?

Answer 6

hello?

Answer 7

I think it's 37, is it i correct? :D

Answer 8

Hello? :)

Answer 9

67-20=47

Answer 10

to find the range you just take the largest value and subtract the smallest value from it.

Answer 11

Thank you! care to do another one? :)

Answer 12

sure

Answer 13

Thanks!

Answer 14

http://i50.tinypic.com/35iwr2h.jpg

Answer 15

is it 39?

Answer 16

Yup

Answer 17

thanks! :) I have some more for ya. ;)

Answer 18

it looks like you are doing them fine.

Answer 19

http://i45.tinypic.com/16acweb.jpg

Answer 20

TRUST ME, I do need help.

is the answer 45?

Answer 21

yes you got it.

Answer 22

oh, another question! different format, but still, another question. :)

Answer 23

ok

Answer 24

Find the lower quartile and upper quartile.
2, 2, 7, 21, 27, 31, 46, 47, 52, 53, 55, 55, 56

Answer 25

It it 46,56?

Answer 26

look up what lower quartile and upper quartile mean, do you know?

Answer 27

Yes!

Answer 28

The upper 25% (or 1/4) and the lower 25% Can you please tell me if it's right or not? :(

Answer 29

its actually the mean of the bottom 50 % and the mean of the top 50 %
To find the breaking point for the top and bottom, you start by finding the mean of the entire set.

Answer 30

Ah, so... 2,56?

Answer 31

sorry sorry whenever i said mean i should have said median

Answer 32

So... are both of my answers wrong?

Answer 33

First let's find the median (which means number that is listed and is in the middle) of the entire set. yes the answers are wrong so far.

Answer 34

31, 46,

Median is between that

Answer 35

since we have an odd number of data numbers we will end up with an exact answer for the median

Answer 36

how many numbers do we have?

Answer 37

13

Answer 38

so what number is exactly in the middle, you were close with your previous answer, but we only want one median

Answer 39

46

Answer 40

great!
now we have the upper range (which is 46 thru 56)
and the lower range ( which is 2-46)
You must find the median of the upper and lower range.

Answer 41

Side question: Find the interquartile range.
8, 8, 16, 20, 36, 37, 37, 51, 51, 54, 64, 70, 70

is it 41?

Answer 42

upper: 53 lower: 21

Answer 43

The interquartile range is = upper quartile - lower quartile

Answer 44

your upper and lower are correct!

Answer 45

Median is 37 for the bq~!

Answer 46

yes

Answer 47

have you calculated the interquartile range yet?

Answer 48

34

Answer 49

yes!

Answer 50

Wait... we have a problem...

Find the interquartile range.
8, 8, 16, 20, 36, 37, 37, 51, 51, 54, 64, 70, 70
a.22
c.62
b.19
d.41

no 34!

Answer 51

explain? please?

Answer 52

i literally have to leave in less than two minutes. please, exlain! :(

Answer 53

that is a little confusing. let me double check something

Answer 54

Yeah...

Answer 55

please, hurry!

Answer 56

I have less than 27 seconds...

Answer 57

9

Answer 58

9

Answer 59

lower is 18

Answer 60

upper is 59

Answer 61

59-18 =

Answer 62

d

Answer 63

i see what i did wrong now, you want an explanation still