Rewrite the following cumulative frequency distribution into frequency distribution:

Less than or equal to 10 = 2

Less than or equal to 20 = 7

Less than or equal to 30 = 18

Less than or equal to 40 = 32

Less than or equal to 50 = 43

Less than or equal to 60 = 50

The maximum temperatures (in degree celsius) for Delhi for the month of April, 2014, as reported by the Meteorological Department, are given below:

27.4, 28.3, 23.9, 23.6, 25.4, 27.5, 28.1, 28.4, 30.5, 29.7, 30.6, 31.7, 32.2, 32.6, 33.4, 35.7, 36.1, 37.2, 38.4, 40.1, 40.2, 40.5, 41.1, 42.0, 42.1, 42.3, 42.4, 42.9, 43.1, 43.2.

Construct a frequency distribution table.

The class marks of a distribution are 9.5, 16.5, 23.5, 30.5, 37.5 and 44.5. Determine the class size and the class limits of the third class.

The area under wheat cultivation last year in the following states, correct to the nearest lacs hectares was :

Represent the above information by a bar graph.