Homework Help: Geometry

Posted by Stephanie on Saturday, April 4, 2009 at 2:55pm.

Business and finance. The following scores were recorded on a 200-point final examination:
193, 185, 163, 186, 192, 135, 158, 174, 188, 172, 168, 183, 195, 165, 183.
(a) Find the mean final examination score.
(b) Find the median final examination score.
(c) Is the mean or median a more useful representative of the final examination
scores? Write a brief paragraph justifying your response.

Geometry - sophie, Saturday, April 4, 2009 at 6:30pm
a- 176 is the mean
not sure on the rest, sorry
Geometry - Riley, Monday, April 6, 2009 at 2:03pm
Mean= The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers.

Median= The "median" is the "middle" value in the list of numbers. To find the median, your numbers have to be listed in numerical order, so you may have to rewrite your list first.

For example:

take the set 1,2,5,4,2,3,7,4,1

Mean/average=
(1+2+5+4+2+3+5+4+1)
------------------- = 3
9

Median= 1,1,2,2,3,4,4,5,5 so the middle number would be 3.

Now which do you think better represents the set of data?

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