Question

Let x be the upper limit of the modal class and y be the class mark of the median class of the following data:
Class
10-15
15-20
20-25
25-30
30-35
35-40
Frequency
8
12
10
11
13
6
what is the value of x and y?
​

Answer 1

Answer:

Converting the data into continuous frequency distribution by adding 0.5 to upper limit and subtracting 0.5 to lower limit, we get;

Class Frequency Cummulative

Frequency

0.-5.5 13 13

5.5-11.5 10 23

11.5-17.5 15 38

17.5-23.5 8 46

23.5-29.5 11 57

Σf

i

=57

2

N

=

2

57

=28.5

38 is just greater than 28.5

∴The Median class is 11.5−17.5.

Thus the upper limit is equal to 17.5.

Mark me as a brain list And followr me

Answer 2

Answer:

Step-by-step explanation:

Hope this helps! Best of luck ✨