EASY
7th CBSE
IMPORTANT
Earn 100

The number of children in 10 families of a locality are:

2,4,3,4,2,3,5,1,1,5

Find the mean number of children per family.

50% studentsanswered this correctly

Important Questions on Data Handling – II (Central Values)

EASY
7th CBSE
IMPORTANT
Mathematics for Class 7>Chapter 23 - Data Handling – II (Central Values)>EXERCISE>Q 16
The mean of marks scored by 100 students was found to be 40 . Later on it was discovered that a score of 53 was misread as 83 . Find the correct mean.
MEDIUM
7th CBSE
IMPORTANT
Mathematics for Class 7>Chapter 23 - Data Handling – II (Central Values)>EXERCISE>Q 17
 The mean of five numbers is 27. If one number is excluded, their mean is 25. Find the excluded number.
EASY
7th CBSE
IMPORTANT
Mathematics for Class 7>Chapter 23 - Data Handling – II (Central Values)>EXERCISE>Q 18
The mean weight per student in a group of 7 students is 55 kg. The individual weights of 6 of them (in kg) are 52,54,55,53,56 and 54. Find the weight of the seventh student.
MEDIUM
7th CBSE
IMPORTANT
Mathematics for Class 7>Chapter 23 - Data Handling – II (Central Values)>EXERCISE>Q 19
The mean weight of 8 numbers is 15 kg. If each number is multiplied by 2, what will be the new mean?
EASY
7th CBSE
IMPORTANT
Mathematics for Class 7>Chapter 23 - Data Handling – II (Central Values)>EXERCISE>Q 20
 The mean of 5 numbers is 18. If one number is excluded, their mean is 16. Find the excluded number.
HARD
7th CBSE
IMPORTANT
Mathematics for Class 7>Chapter 23 - Data Handling – II (Central Values)>EXERCISE>Q 21
The mean of 200 items was 50. Later on, it was discovered that the two items were misread as 92 and 8 instead of 192 and 88. Find the correct mean.
MEDIUM
7th CBSE
IMPORTANT
Mathematics for Class 7>Chapter 23 - Data Handling – II (Central Values)>EXERCISE>Q 22
The mean of 5 numbers is 27. If one more number is included, then the mean is 25. Find the included number.
MEDIUM
7th CBSE
IMPORTANT
Mathematics for Class 7>Chapter 23 - Data Handling – II (Central Values)>EXERCISE>Q 23
The mean of 75 numbers is 35. If each number is multiplied by 4, find the new mean.