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maths statistics helps. MEI S1. URGENT

1. George records the time he spends per day surfing the internet for the first three
weeks of May. The times, given to the nearest minute, are as follows:
0 26 13 5 18 12 35
24 61 16 10 26 15 0
0 73 21 17 16 42 32
(i) Illustrate the data using a sorted stem and leaf diagram with eight stems.
Comment briefly on the shape of the distribution. [3]
(ii) Find the mode, median and mean, commenting on their relative usefulness as
measures of central tendency for this data set. [5]
(iii) Calculate the standard deviation and hence find any outliers. [4]
(iv) George’s Dad claims that he is spending too much time on the internet. He
tells George to reduce his usage so that the mean daily time for May is 20%
less than the current mean.
What is the maximum total time George can spend surfing the internet for the
remaining 10 days of May?

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