
Originally Posted by
Hikaru
Heya! =]
Two weeks of holidays has taken a toll on what I learnt about distributions. Could you guys please help me with a question? =]
This is the question I need help with:
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Two classes did the same test, which was out of 30 marks. The scroes for the two classes are shown below:
Class 1: 3, 4, 6, 6, 7, 11, 13, 16, 17, 18, 18, 19, 19, 20, 20, 21, 21, 21, 23
Class 2: 7, 8, 12, 13, 13, 14, 15, 15, 16, 17, 18, 18, 20, 20, 21, 21, 22, 23, 24, 26, 27, 29, 30
From Class 1, Alexander was one of the scores of 21. From Class 2, Alexandra was the person who scored 23.
Which of these two students can claim to have done better, in comparion to the rest of their class?
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I know I'm supposed to use a mean somewhere in it. So, here's the mean calculated out...
Class 1's mean: 14.89
Class 2's mean: 18.65
But what should I do with it now? =[
Thanks in advance!