In a maths test taken by 35 students,the aver | vedclass

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Question

(C) The average score of $15$ girls is $10$. Therefore,the sum of the scores of the girls = $15 	imes 10 = 150$.The average score of $20$ boys is $10

Vedclass · Accepted Answer

The sum of the scores of the $35$ students of the whole class.

Vedclass · Answer

(C) The average score of $15$ girls is $10$. Therefore,the sum of the scores of the girls = $15 	imes 10 = 150$.The average score of $20$ boys is $10$. Therefore,the sum of the scores of the boys = $20 	imes 10 = 200$.The total sum of the scores of all $35$ students = $150 + 200 = 350$.Since we only have the average values,we cannot determine individual scores,such as the highest or lowest scores.Thus,only the sum of the scores of the whole class can be calculated.

Class	$0-10$	$10-20$	$20-30$	$30-40$	$40-50$	$50-60$	$60-70$	$70-80$
Frequency	$2$	$6$	$8$	$x$	$20$	$18$	$y$	$14$

Class	$0-10$	$10-20$	$20-30$	$30-40$	$40-50$
Frequency	$6$	$x$	$17$	$y$	$8$

In a maths test taken by $35$ students,the average score of $15$ girls is $10$ and that of $20$ boys is also $10$. Which of the following can be calculated based on the data we have?

Similar Questions

The median of the following frequency distribution is $49$ and the total frequency is $100$. Find the missing frequencies $x$ and $y$.

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Frequency $2$ $6$ $8$ $x$ $20$ $18$ $y$ $14$

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