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?
- AThe highest score in the class.
- BThe lowest score among boys in the class.
- CThe sum of the scores of the $35$ students of the whole class.
- DAll the above can be calculated.
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Similar Questions
In a retail market,fruit vendors were selling mangoes kept in packing boxes. These boxes contained varying numbers of mangoes. The following was the distribution of mangoes according to the number of boxes.
Number of mangoes $50$-$52$ $53$-$55$ $56$-$58$ $59$-$61$ $62$-$64$ Number of boxes $15$ $110$ $135$ $115$ $25$
Find the mean number of mangoes kept in a packing box. Which method of finding the mean did you choose?
| Number of mangoes | $50$-$52$ | $53$-$55$ | $56$-$58$ | $59$-$61$ | $62$-$64$ |
| Number of boxes | $15$ | $110$ | $135$ | $115$ | $25$ |
Find the mean number of mangoes kept in a packing box. Which method of finding the mean did you choose?
Difficult
View SolutionThe weights (in $kg$) of $50$ wrestlers are recorded in the following table:
Weight (in $kg$) $100-110$ $110-120$ $120-130$ $130-140$ $140-150$ Number of wrestlers $4$ $14$ $21$ $8$ $3$
Find the mean weight of the wrestlers (in $kg$).
| Weight (in $kg$) | $100-110$ | $110-120$ | $120-130$ | $130-140$ | $140-150$ |
| Number of wrestlers | $4$ | $14$ | $21$ | $8$ | $3$ |
Find the mean weight of the wrestlers (in $kg$).
Medium
View SolutionThe mean of the following frequency distribution is $60$ and the total frequency is $120$. Find the missing frequencies $f_{1}$ and $f_{2}$.
Class $10-30$ $30-50$ $50-70$ $70-90$ $90-110$ Frequency $17$ $f_{1}$ $32$ $f_{2}$ $19$
| Class | $10-30$ | $30-50$ | $50-70$ | $70-90$ | $90-110$ |
| Frequency | $17$ | $f_{1}$ | $32$ | $f_{2}$ | $19$ |
Medium
View SolutionThe mean of $5$ observations is $16$. If an observation $5$ is replaced by $-5$,the new mean is ...........
Medium
View SolutionConsider the following distribution:
Marks obtained Number of students More than or equal to $0$ $63$ More than or equal to $10$ $58$ More than or equal to $20$ $55$ More than or equal to $30$ $51$ More than or equal to $40$ $48$ More than or equal to $50$ $42$
The frequency of the class $30-40$ is:
| Marks obtained | Number of students |
| More than or equal to $0$ | $63$ |
| More than or equal to $10$ | $58$ |
| More than or equal to $20$ | $55$ |
| More than or equal to $30$ | $51$ |
| More than or equal to $40$ | $48$ |
| More than or equal to $50$ | $42$ |
The frequency of the class $30-40$ is:
Easy
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