Question

Weight (in kg)
Less than 38
Less than 40
Less than 42
Less than 44
Less than 46
Less than 48
Less than 50
Less than 52
No. of Students
0
3
5
9
14
28
32
35
(a) Find the median class of the given data.
(i) 44-46 (ii) 46-48 (iii) 48-50 (iv) None of these
(b) Calculate the median weight of the given data.
(i) 46.5 (ii) 47.5 (iii) 46 (iv) 47
(c) Find the mean of the given data.
(1) 45 (ii) 45.8 (iii) 46.2 (iv) 46.8
(d) Find the modal class of the given data.
(i) 44-46 (ii) 46-48 (iii) 48-50 (iv) 50-52​

Answer 1

Answer:

distribution table for the given set of scores:

39,16,30,37,53,15,16,60,58,26,28,19,20,12,14,24, 59,21,57,38,25,36,24,15,25,41,52,45,60,63,18,26,43,36,18,27,59,63,46,25,33,46,42,48,35,64,24.Take class intervals as (10−20),(20−30),.... and answer the following:

(i) What does the frequency corresponding to the third class interval mean?

(ii) What is the size of each class interval? Find the midpoint of the class interval 30−40.

匚尺卂乙ㄚ 爪ㄩ几ᗪ卂