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II  A day at the beach  II  II  II  II  II



         Here are the results of a survey on the age of people on the beach.
        OJ      Calculate the mean age in  years of each group.

                When you need to, round the age to the nearest year.























                                             group c
                                       ·  name    age
                                         Bob         30
                                         Jill        35
                                         Aidan        8
                                         Kelly        5















                                                                                                      70

                                                                                                      3S
                                                                                                       8
                                                                                                       8
                                                                                                       5





         cg]       Decide the age in years of each of the five children in this group.

                   Mean age:  12 years               Median age: 11  years
                   Modal age:  10 years              Range:          6 years
                                                                                           I STEPS 5:15 I
   63   64   65   66   67   68   69   70   71   72   73