#### The marks obtained by 17 students in a mathematics test (out of 100) are given below:

91, 82, 100, 100, 96, 65, 82, 76, 79,90, 46, 64, 72, 66, 68, 48, 49

The range of the data is

(a) 46

(b) 54

(a) 46

(d) 100

**Solution:**

(b) 54 is correct

#### The class mark of the class 90-120 is

(a) 90

(b) 105

(c) 115

(d) 120

**Solution:**

Class mark = (upper limit + lower limit) / 2

Then, Class mark = 120 + 90 / 2

= 210 / 2 = 105.

(b) 105 is correct

**More Solutions:**

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- Find the mean and the median of all the (positive) factors of 48.
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- What is the new mean age?