Page 263 - Artificial Intellegence_v2.0_Class_11
P. 263
MEDIAN: (frequency Distribution Series):
(Class Interval Series)
Wages f cf
(X) 1. Find Cumulative Frequency (cf)
0 – 100 2 2 2. Median th
n
Class = Size of item
2
100 – 200 1 3
th
th
= (10/2) item = 5 ITEM
200 – 300 3 6
th
5 item lies in Cumulative Frequency 6
300 – 400 3 9
Hence Median Class = 200 – 300
400 – 500 1 10 6. Apply formula
N = 10 n
− cf
2
=
l = 200 Ml + f x i
1
1
cf = 3
10
f = 3 − 3
2
=
M 200 + 3 x 100
Median = 266.67
Mode
In statistics, the mode is the value that appears most often in a given list of numbers.
INSPECTION METHOD
MODE (Individual Series): Inspection
Method
Marks Marks
2 2
Two times
5 2
7 3 One time
5 5 Arrange the Data in Ascending Order
6 5 Three times
2 5
5 6 One time By Inspection of the Data it is clear
7 7 that the value ‘7’ occurs most number
of times in the series i.e. 4 times
3 7 Four times
7 7
7 7 Hence Mode = 7
Data Analysis (Computational Thinking) 261

