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 ?

Q. The weights of

40

students of class VIII are given below :

Weight (kg)	$38$	$40$	$41$	$43$	$45$	$48$
No. of students	$3$	$8$	$9$	$7$	$6$	$7$

Find the mean weight.

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Weight (kg.)	$35$	$36$	$38$	$40$	$42$	$44$	$45$
Number of students	$6$	$5$	$8$	$9$	$2$	$7$	$4$

Find the median weight of the data.Weight (kg.)35363840424445Number of students6589274

The correct option is B 40Total number of students =6+5+8+9+2+7+4=41Since, the number of students is odd, the median will be (n+12)th number which is the 21st numberHere, 21st observation( 4 th row if we create cumulative frequency table) is 40 Kg if arranged in ascending order.Hence, median =40.

Find the median weight of the data.
Weight (kg.) $35$ $36$ $38$ $40$ $42$ $44$ $45$
Number of students $6$ $5$ $8$ $9$ $2$ $7$ $4$