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    Anyone any tips of how to do this?










    Time to the nearest minute
    No' of Children
    10 – 19
    20 – 24
    25 – 29
    30 – 39
    40 – 49
    50 – 64
    65 – 89
    8
    15
    25
    18
    12
    7
    5



    I have found the class width, fror example time 10 - 19 minutes can be between 9.5 and 19.5. So the width is 10. I then devided the number of children/frequency by the class width, to give me 0.8 for the first row of data. I have done the whole table but do not know where to go from here.

    Anyone any tips on what to write aboutabsolute error and how to find the mean, median and interquartile range?

    thanks
 
 
 
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