how do you find the class interval in which the median lies

  • 0 votes

I am given a table that looks a bit like this:
cost (£c)     Frequency

0<c<50          4

50<c<100       8

100<c<150       7

150<c<200      10

200<c<250       11

the question says: find the class interval in which the median lies

PLEASE HELP!!!!!!!!!!!! :)

Posted Sun 3rd June, 2012 @ 17:34 by Josie Wilders

4 Answers

  • 2 votes

It's very simple they just try to confuse you!

The question means find the group where the median is.

So add up all the frequencys:

4+8+7+10+11= 40

Then divide by how many there are and you have 5 so 40/5=8

Then imagine you have each one lined up and you have to count 8 along the line.

So the 8th one would fall in the group 50<c<100

It's hard to write but if you don't understand just comment and I'll explain again :)

Answered Sun 3rd June, 2012 @ 17:39 by Georgia
  • 0 votes

Thanks so much! I understand now :)

Answered Sun 3rd June, 2012 @ 17:50 by Josie Wilders
  • 0 votes

You're welcome :)

Answered Sun 3rd June, 2012 @ 17:54 by Georgia
  • 0 votes

Georgia, i think you got confused with the mean. The median which you josie were trying to do is put the numbers in order and choose the one in the middle. SIMPLES :)

Answered Thu 8th January, 2015 @ 14:18 by siobhannnn