3. The number of children in 10 families of a locality are :
2, 4, 3, 4, 2, 0, 3, 5, 1,6
Find the mean number of children per family.
4. The following are the number of books issued in a school library during a week:
105, 216, 322, 167, 273, 405, 346
Find the mean number of books issued per day.
5. The daily temperature recorded (in degree F) at a place during a week was as under:
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
35.5
30.8
27.3
32.1
23.8
29.9
Find the mean temperature.
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Answered by
0
Answer:
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ANSWER
Given that
The numbers of children in 10 families of a locality are 2,4,3,4,2,3,5,1,1,5
We know mean =No. of observationssum of observations
=102+4+3+4+2+3+5+1+1+5
=1030
=3
Answered by
1
Answer:
3. It is given that number of children in 10 families of a locality are 2, 4, 3, 4, 2, 0, 3, 5, 1 and 6.
We know that
Mean = sum of numbers/ total numbers
By substituting the values
Mean = (2 + 4 + 3 + 4 + 2 + 0 + 3 + 5 + 1 + 6)/ 10
On further calculation
Mean = 30/10
By division
Mean = 3
Therefore, the mean number of children per family is 3.
4. It is given that the number of books issued are 105, 216, 322, 167, 273, 405 and 346.
We know that
Mean = sum of numbers/ total numbers
By substituting the values
Mean = (105 + 216 + 322 + 167 + 273 + 405 + 346)/ 7
On further calculation
Mean = 1834/7
By division
Mean = 262
Therefore, the average number of books issued per day is 262.
5.Sum of temperature during whole week =35.5+30.8+27.3+32.1+23.8+29.9=179.4
Total number of days =6
Mean temperature = sum of temperature during whole week /number of days
= 179.4 /6
= 29.9∘F
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