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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 i) Considering the class value, the average score of the whole class is_____. ii) Ratio of the no. of students who scored above 80 to the no. of students who scored below 70 is______. |
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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
i) Considering the class value, the average score of the whole class is_____. ii) Ratio of the no. of students who scored above 80 to the no. of students who scored below 70 is______. |
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