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Subject :IMO    Class : Class 7

The heights of 10 students were measured in cm and the results are as follows : 147, 139, 135, 136, 149, 166, 152, 163, 155, 144.

(i) What is the range of the data?
(ii) What is the mean height of the students?
(iii) How many students are there whose height is more than the mean height?

(i) (ii) (iii)
A 30 100.5 3
B 31 148.6 5
C 32 149 5
D 28 148.6 4


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