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# A teacher gave the same test to two classes: A and B. The

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A teacher gave the same test to two classes: A and B. The [#permalink]

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09 May 2005, 04:50
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A teacher gave the same test to two classes: A and B. The average scores for the two classes were 82, 74, respectively. The median scores for the two classes were 80, 78, respectively. Was the average score greater than the median scores for the two classes combined?
1) A and B have 37, 40 students, respectively.
2) Two classes have 77 students.
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09 May 2005, 06:39
"A"

state 1: Avg for the class = (82*37 + 40*74 ) /77 ~ 77.84

I think median of a combined set will be gr8 than the lowest median and less than the highest median. So the median will be bet 78 and 80...so ans is NO...suff

state 2...no way to calculate the mean...insuff
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09 May 2005, 17:59
banerjeea_98 wrote:
I think median of a combined set will be gr8 than the lowest median and less than the highest median. So the median will be bet 78 and 80...so ans is NO...suff

i also think in the say as above.
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10 May 2005, 03:40
banerjeea_98 wrote:
"A"

state 1: Avg for the class = (82*37 + 40*74 ) /77 ~ 77.84

I think median of a combined set will be gr8 than the lowest median and less than the highest median. So the median will be bet 78 and 80...so ans is NO...suff

state 2...no way to calculate the mean...insuff

Good explanation baner...Thanks
10 May 2005, 03:40
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