## rebecca1233 2 years ago Where is the median in this stem-and-leaf plot?

1. rebecca1233

2. rebecca1233

61 65 70 73

3. goformit100

Madam Do you know the formula of median ?

4. rebecca1233

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

5. goformit100

6. rebecca1233

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

7. goformit100

Yes Its correct @ParthKohli

8. rebecca1233

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

9. rebecca1233

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

10. rebecca1233

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

11. rebecca1233

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

12. rebecca1233

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

13. rebecca1233

@jhonyy9

14. rebecca1233

@ZeHanz

15. goformit100

Now after getting the middle term The find the median.

16. goformit100

*then

17. rebecca1233

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

18. goformit100

Yes Its correct now

19. rebecca1233

that is the median

20. rebecca1233

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

21. goformit100

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

22. rebecca1233

I thought you knew :/ @Koikkara hlp please

23. goformit100

@Koikkara

24. rebecca1233

@amistre64

25. rebecca1233

help someone!! Explain!!

26. Koikkara

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

27. rebecca1233

You going to help me ?

28. amistre64

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

29. 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....@!!

30. amistre64

how many leafs are there? entotal?

31. rebecca1233

13?

32. amistre64

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

33. 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|

34. amistre64

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

35. rebecca1233

73?

36. rebecca1233

why do u cross only those out for ?

37. 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

38. 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

39. rebecca1233

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

40. rebecca1233

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

41. rebecca1233

thats where im confused

42. rebecca1233

@amistre64

43. amistre64

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

44. rebecca1233

u count what?

45. rebecca1233

there is 13 on the leaf side

46. 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

47. amistre64

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

48. rebecca1233

alright

49. rebecca1233

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

50. 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 \[\cancel{42}~ 44~ 51~ 53~ 61~ 65~ 70~73~78~83~85~87~\cancel{89}\] \[\cancel{42}~ \cancel{44}~ 51~ 53~ 61~ 65~ 70~73~78~83~85~\cancel{87}~\cancel{89}\] \[\cancel{42}~ \cancel{44}~ \cancel{51}~ 53~ 61~ 65~ 70~73~78~83~\cancel{85}~\cancel{87}~\cancel{89}\] \[\cancel{42}~ \cancel{44}~ \cancel{51}~ \cancel{53~ 61~ 65}~ 70~\cancel{73~78~83}~\cancel{85}~\cancel{87}~\cancel{89}\]

51. amistre64

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

52. rebecca1233

oh i i see u made them numbers not separte numbers

53. rebecca1233

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

54. rebecca1233

thats where u get 70

55. rebecca1233

thats where i did it wrong lol

56. amistre64

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

57. rebecca1233

yeah i wasnt doing that lol i feel dumb haha

58. amistre64

:) youll do fine after this

59. rebecca1233

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

60. amistre64

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