Competition results: Result 10 20 30 40 50 Participants 1 2 5 k 3 Mean value of the results is 34. Help?
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If the mean value of the results is 34, then you need to solve the following for :
The mean is equal to the sum of the results divided by the sum of the competitors, so: From there, it's simple algebra. Solve for k.
Originally Posted by downthesun01 The mean is equal to the sum of the results divided by the sum of the competitors, so: From there, it's simple algebra. Solve for k. cpbrunner's got it right. You have to take the frquencies into account on the numerator. downthesun01 hasn't.
My mistake. You're totally right
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