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

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

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	$10-25$	$25-40$	$40-55$	$55-70$	$70-85$	$85-100$
Frequency	$5$	$21$	$21$	$8$	$25$	$20$

Class	$5-10$	$10-15$	$15-20$	$20-25$	$25-30$	$30-35$
Frequency	$11$	$20$	$35$	$20$	$8$	$6$

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 class in the following frequency distribution is $\ldots \ldots \ldots \ldots .$

Class $10-25$ $25-40$ $40-55$ $55-70$ $70-85$ $85-100$

Frequency $5$ $21$ $21$ $8$ $25$ $20$

The mean of ungrouped data and the mean calculated when the same data is grouped are always the same. Do you agree with this statement? Give reason for your answer.

For a given frequency distribution,$\Sigma f_{i} u_{i} = -13$,$n = \Sigma f_{i} = 100$,$A = 62.5$ and $c = 15$. Then,mean $\bar{x} = \dots$

Find the mean,median and mode of the following frequency distribution:

Class $5-10$ $10-15$ $15-20$ $20-25$ $25-30$ $30-35$

Frequency $11$ $20$ $35$ $20$ $8$ $6$

In the formula $\bar{x} = \frac{\Sigma f_{i} x_{i}}{\Sigma f_{i}}$,$x_{i}$ represents ..........

Vedclass Test Series

Exam Paper Generator

Online Exam Module