ICSE Class X Math 2018 Solved Paper

Question : 32

Total: 32

Use Graph paper for this question.
A survey regarding height (in cm ) of 60 boys belonging to Class 10 of a school was conducted. The following data was recorded:

Height in cm	135−140	140−145	145−150	150−155	155−160	160−165	165−170
No. of boys	4	8	20	14	7	6	1

Taking 2‌cm= height of 10‌cm along one axis and 2‌cm=10 boys along the other axis draw an ogive of the above distribution. Use the graph to estimate the following:
(i) the median
(ii) lower Quartile
(iii) if above 158‌cm is considered as the tall boys of the class. Find the number of boys in the class who are tall.

Solution:

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