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