The weights of $10$ boys are measured (in kg) and the results are listed below:
$35, 38, 30, 34, 29, 36, 28, 33, 32, 26$ .
What is the mean weight of the boys ?

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Solution

Number of boys $= 10$
Total weight of boys $= 35 + 38 + 30 + 34 + 29 + 36 + 28 + 33 + 32 + 26$
$= 321$
Mean $= \frac{Sumoftheweights}{Numberofstudents}$
$= \frac{321}{10} = 32.1$
So, the mean weight of the boys is $32.1$ kg.

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Question 95(i)

The weights (in kg) of 30 students of a class are as follows :
39, 38, 36, 38, 40, 42, 43, 44, 33, 33, 31, 45, 46, 38, 37,
31, 30, 39, 41, 41, 46, 36, 35, 34, 39, 43, 32, 37, 29, 26
Prepare a frequency distribution table using one class interval as (30-35), 35 not included.
(i) Which class has the least frequency ?

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The weights of 10 boys are measured (in kg) and the results are listed below:35,38,30,34,29,36,28,33,32,26.What is the mean weight of the boys ?

Number of boys =10Total weight of boys =35+38+30+34+29+36+28+33+32+26 =321Mean =SumoftheweightsNumberofstudents =32110=32.1So, the mean weight of the boys is 32.1 kg.

The weights of $10$ boys are measured (in kg) and the results are listed below:
$35, 38, 30, 34, 29, 36, 28, 33, 32, 26$ .
What is the mean weight of the boys ?

Number of boys $= 10$
Total weight of boys $= 35 + 38 + 30 + 34 + 29 + 36 + 28 + 33 + 32 + 26$
$= 321$
Mean $= \frac{Sumoftheweights}{Numberofstudents}$
$= \frac{321}{10} = 32.1$
So, the mean weight of the boys is $32.1$ kg.