Question

The heights, in cm, of some pupils are:

149 , 111 , 171 , 166 , 152 , 129 , 162 , 144

a) find the mean height of the pupils
b) find the range of the heights of the pupils

Answer 1

You get the mean by adding all the numbers together and dividing it by the amount there is so 149+111+171+166+152+129+162+144 = 1184 and there is 8 numbers so 1184 divided by 8 which is 148 so the mean is 148 and you get the range by subtracting the smallest number from the largest so 171-111 so the range is 60 hope that helps :-)