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Following table shows a frequency distribution for the speed of cars passing through at a particular spot on a high way:
 
Class interval \((km/h)\) Frequency
\(30 - 40\) \(3\)
\(40 - 50\) \(6\)
\(50 - 60\) \(25\)
\(60 - 70\) \(65\)
\(70 - 80\) \(50\)
\(80 - 90\) \(28\)
\(90 - 100\) \(14\)
 
Draw a histogram and frequency polygon representing the data above.
 
Important!
This is a self assessment task. Solve this question and assess the solution steps after the completion of test on your own.