The table below shows the children in a class, sorted according to the – InterviewSolution

InterviewSolution

1.

The table below shows the children in a class, sorted according to their heights.Height(cm)Number of children148 – 1528152 – 15610156 – 16015160 – 16410164 – 1687What is the mean height of a child in this class?

Answer»

Height (cm)	No. of children	Mid Value	Total Height
148 -152	8	150	150 × 8 = 1200
152 -156	10	154	154 × 10 = 1540
156 -160	15	158	158 × 15 = 2370
160 -164	10	162	162 × 10 = 1620
164 -168	7	166	160 × 7 = 1162
Total	50		7892

Mean height = \(\frac{Total\,height}{No\,of\,children}\)

= \(\frac{7892}{50}\) = 157.84 cm

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