| T O P I C R E V I E W |
| sri340 |
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?
|
| 2 L A T E S T R E P L I E S (Newest First) |
| anonmeans |
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? |
| Ultraglide |
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. |
Interactive Math Goodies Software
