Where is the median in this stem-and-leaf plot?

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- anonymous

Where is the median in this stem-and-leaf plot?

- katieb

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- anonymous

##### 1 Attachment

- anonymous

61
65
70
73

- goformit100

Madam Do you know the formula of median ?

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## More answers

- anonymous

do i put the stem in order too? or just the leaf part>

- goformit100

Madam it's correct.

- anonymous

which part.. do i put the stem in order too? or just the leaf part? then what do i do cause even if i put that in order i wont get a big number like that for the answer

- goformit100

Yes Its correct @ParthKohli

- anonymous

there is 18 numbers if i put stem and leaf plot in order together

- anonymous

it goes 0,1,1,2,3,3,3,4,4,5,5,5,6,7,7,8,8,9

- anonymous

u arent telling me which part is correct? wat do i do after i get that ?

- anonymous

how did u get that? cause i put em in order and crossed them out and 5 was in the middle

- anonymous

@goformit100 you need to explain not just give me the answer... wt do u not understand about that

- anonymous

- anonymous

- goformit100

Now after getting the middle term The find the median.

- goformit100

*then

- anonymous

I got 5 for the middle term am i correct bout that

- goformit100

Yes Its correct now

- anonymous

that is the median

- anonymous

but 5 is not the answer? so wat do i do with the 5 ?

- goformit100

@Koikkara HELP HELP.... I have gonna Stuck :'(

- anonymous

I thought you knew :/ @Koikkara hlp please

- goformit100

- anonymous

- anonymous

help someone!! Explain!!

- Koikkara

well, first i'll tag some genius, n then give a try......
@AravindG @TuringTest @amistre64 @Ashleyisakitty @churrity

- anonymous

You going to help me ?

- amistre64

now that i got all the way down to the end, i forgot the question ....

- Koikkara

http://www.xtremepapers.com/revision/gcse/statistics/stem_and_leaf_plots.php
may help with the stuck......n So sorry me a bit weak in maths....ask bio....@!!

- amistre64

how many leafs are there? entotal?

- anonymous

13?

- amistre64

correct,
13/2 will get us near what we want then
what is 13/2?

- Ashleyisakitty

To find the median of a steam and leave diagram is to cross out each number going in a diagonal form. Thats a bit confusing to understand so im going to include a drawing of what I mean. |dw:1363112492216:dw|

- amistre64

13/2 = 6.5
since it has a decimal on it .... we round up to 7
the median is the 7th leaf

- anonymous

73?

- anonymous

why do u cross only those out for ?

- amistre64

4 | 2 4 ... 2 leaf
5 | 1 3 ... 4 leaf
6 | 1 5 ... 6 leaf
7 | 0 3 8
^^
7th leaf
lets go with 70 as the median

- amistre64

if we had just written these out, itd be the 7th number
1 2 3 4 5 6 7
42 44 51 53 61 65 70

- anonymous

but dont u cross the top 2 and top bottom so it would be the 6 row

- anonymous

in ur example where u crossed things out im lookin at the stem side u cross 2 and cross 2 at bottom so its in row 6

- anonymous

thats where im confused

- anonymous

- amistre64

i dont go with the crossing things out method ... i simply count

- anonymous

u count what?

- anonymous

there is 13 on the leaf side

- amistre64

1 3 are 2 different leafs.
stem | leafs
S | L1 L2 L3 L4 ...
a leaf is usually a unit value.
a stem is usually a base 10 value

- amistre64

42 43 45 46 would stem and leaf as:
4 | 2 3 5 6
its just a way of representing the data points

- anonymous

alright

- anonymous

so u just cross em out but 7 is still at the bottom..idk im confused lol

- amistre64

lets list your numbers instead of leafing them ok?
\[42~ 44~ 51~ 53~ 61~ 65~ 70~73~78~83~85~87~89\]
one way to find the median is to find the number in the center .. we can do that by crossing off positions in a symmetric manner
\[\cancel{42}~ 44~ 51~ 53~ 61~ 65~ 70~73~78~83~85~87~\cancel{89}\]
\[\cancel{42}~ \cancel{44}~ 51~ 53~ 61~ 65~ 70~73~78~83~85~\cancel{87}~\cancel{89}\]
\[\cancel{42}~ \cancel{44}~ \cancel{51}~ 53~ 61~ 65~ 70~73~78~83~\cancel{85}~\cancel{87}~\cancel{89}\]
\[\cancel{42}~ \cancel{44}~ \cancel{51}~ \cancel{53~ 61~ 65}~ 70~\cancel{73~78~83}~\cancel{85}~\cancel{87}~\cancel{89}\]

- amistre64

if you follow this on the stem leaf .... you get Ashleys suggestions

- anonymous

oh i i see u made them numbers not separte numbers

- anonymous

like not just 4 , 2 , and so on u made it 42 and etc

- anonymous

thats where u get 70

- anonymous

thats where i did it wrong lol

- amistre64

take the stem, and attach it to each leaf
7 | 0 3 8 represents: 70 73 78

- anonymous

yeah i wasnt doing that lol i feel dumb haha

- amistre64

:) youll do fine after this

- anonymous

lol yeah that i understand now haha .. thank you :) thank you for working with me haha ..

- amistre64

youre welcome, i do have to be going for today so i wish you the best of luck

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