Size of the class 120 - 160 is _____.

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Solution

The correct option is B 40
Size of a class = Upper limit - Lower limit
In the given question the upper limit is 160 and the lower limit is 120
Hence, the size of the class = 160 - 120 = 40

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Similar questions

\begin{matrix} H e i g h t (i n c m) & 100 - 110 & 110 - 120 & 120 - 130 & 130 - 140 & 140 - 150 & 150 - 160 & 160 - 170 & 170 - 180 N o . o f g o a l s s c o r e d & 8 & 10 & 15 & 9 & 12 & 14 & 13 & 10 \end{matrix}

If there are 15 people in the height range 150-160 cm in a class of 120 people, the percentage of people in the height range 150-160 cm is__________.

The formula for finding mean by direct method is $\frac{\sum (A \times B)}{\sum A}$

Where B and A are respectively:

Height in cm (Class Marks)	120	130	140	150	160	170
No. of student	8	10	14	12	6	2

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