Question

the height of 50 children where measure correct to the nearest centimetre 65, 66, 67, 68, 69, 70, 71, 72 number of children 1, 4, 5, 7, 11, 10, 6, 4, 2 calculate the mean height, correct to one place of decimal

Answer 1

You can find it by formula given below,
Mean Height = Sum of all measured heights ÷Total no. of measured heights .

And it you want to make the answer to one place of decimal then use standard form