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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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Ans 6:
Class : Class 4
The answer is D. As per option A -> 3314 5131 = 8445 . We have to round of to tens --that will give - 8450.We need to have 8500. No option is matching that.