Author 
Topic 

sri340
Average Member
USA
18 Posts 
Posted  03/10/2009 : 14:03:32

The accompanying table represents the number of cell phone minutes used for one week by 23 users.
Number of Minutes 71–80 61–70 51–60 41–50 31–40
Number of Users 10 7 2 3 1
Which interval contains the median?



Ultraglide
Advanced Member
Canada
299 Posts 
Posted  03/10/2009 : 15:05:08

The median is the middle value when the numbers are ranked from highest to lowest. If there are an even number of entries, take the mean (average) of the middle 2. 


anonmeans
Senior Member
USA
37 Posts 
Posted  03/10/2009 : 19:55:49

quote: Originally posted by sri340
The accompanying table represents the number of cell phone minutes used for one week by 23 users.
Number of
Minutes 71–80 61–70 51–60 41–50 31–40
Number of
Users 10 7 2 3 1
Which interval contains the median?
At a guess, you're supposed to list out the number of users in each interval, or at least count them out. You have:
. . .10 + 7 + 2 + 3 + 1 = 23 users
If you list the numbers from "1" to "23", what is the median value?
In which interval of "number of minutes" would you reach this person in line? 
Edited by  anonmeans on 03/10/2009 19:56:47 



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