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How do you find the mean/median/ mode of a stem and leaf diagram?

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    Have a Maths exam today and I don't know this!!

    (Original post by missdiorxx)
    Have a Maths exam today and I don't know this!!

    Write out all the values and find the mean, median and mode in the same way as you normally would. Eg if the stem is 2 and the leaf is 5 that's 25 or you could get one with 14 as a stem and a leaf with 6 which would make 146 so that's how you'd find the values and then you would just find the median mean and mode as normal

    MOde - look for the MOst common number.

    MeDIan - count your leaves and plus 1 to how many there are, divide this by 2, then look up the value e.g n=19, so median = 19+1/2 = 10, so it's the 10th value which is also the MIDDLE number.

    Mean - add Em up and divide them by N, you're looking for the meaning of ALL this data… the meaning is the average of them
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