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The following scores were obtained in a statistics exam class interval[50,60)[60,70)[70,80)[80,90)[90,100)Class value xi 5565758595Frequency fi14652 Find: i) Considering the class value, the average score of the whole class. ii) The ratio of the no. of students who scored above 80 to the ratio no. of students who scored below 70. |
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Answer» The following scores were obtained in a statistics exam class interval[50,60)[60,70)[70,80)[80,90)[90,100)Class value xi 5565758595Frequency fi14652
Find: i) Considering the class value, the average score of the whole class. ii) The ratio of the no. of students who scored above 80 to the ratio no. of students who scored below 70. |
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