12. Four mark exercise problems II

Form a continuous frequency distribution table for the marks obtained by \(30\) students in a \(X\) std public examination.

 

\(328\), \(470\), \(405\), \(375\), \(298\), \(326\), \(276\), \(362\), \(410\), \(255\), \(391\), \(370\), \(455\), \(229\), \(300\), \(183\), \(283\), \(366\), \(400\), \(495\), \(215\), \(157\), \(374\), \(306\), \(280\), \(409\), \(321\), \(269\), \(398\), \(200\).

 

Answer:

 

Let us take the class size as \(50\).