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    Can't find practice questions for this topic because I don't exactly know what this topic is actually called.

    Example question:

    25 students in class A did a science exam.30 students in class B did the same science exam.The mean mark for the 25 students in class A is 67.8The mean mark for all the 55 students is 72.0Work out the mean mark for the students in class B.

    I thought it went under "averages: mean" but I just end up finding questions that ask about the mean from a table or set of data which isn't what I'm looking for.
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    It is just averages applied to a slightly different scenario.
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    This question is a about understanding the mean in the "Robin Hood" sense of sharing the available numbers equally. It is however still just about the mean.
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    Statistics at GCSE
 
 
 
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