Q5 of 141 Page 8

Write the empirical relation between mean, mode and median.

We know that,

Mode = 3 Median – 2 Mean

Which measure of central tendency is given by the x-coordinate of the point of intersection of the ‘more than’ ogive and ‘less than’ ogive?

What is the value of the median of the data using the graph in the following figure of less than ogive and more than ogive?

Which measure of central tendency can be determined graphically?

Write the modal class for the following frequency distribution:

Class-interval:	10-15	15-20	20-25	25-30	30-35	35-40
Frequency:	30	35	75	40	30	15