The blood groups of 30 students of a class VIII are recorded as follows :
Represent this data in the form of a frequency distribution table. Which is themost common and which is the rarest blood group among these students ?

The blood groups of 30 students of Class VIII are recorded as follows: A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O, A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O. Represent this data in the form of a frequency distribution table. Which is the most common, and which is the rarest, blood group among these students?

The blood groups of 30 students of Class VIII are recorded as follows:Use this table to determine the probability that a student of this class, selected at random, has blood group AB.

Draw a histogram to represent the following grouped frequency distribution:

Which of the blood groups can be given to any person

During the medial check up of 35 students of a class, their weights were recorded as follows: Draw a less than type ogive for the given data. Hence obtain the median weight from the graph and verify the result by using the formula.

The height of 50 students, measured to the nearest centimetres have been found to be as follows: Represent the data given above by a grouped frequency distribution table, taking the class intervals as 160-165, 165-170 etc.

The following table shows the favourite sports of 250 students of a school. Represent the data by a bar graph

The blood groups of 30 students of Class VIII are recorded as follows: A,B,O,O,AB,O,A,O,B,A,O,B,A,O,O, A,AB,O,A,A,O,O,AB,B,A,O,B,A,B,O. Use this table to determine the probability that a student of this class, selected at random, has blood group AB.