The weekly observations on cost of living index in a certain city for a particular year are given below.
Cost of living index
140-150
150-160
160-170
170-180
180-190
190-200
Number of
weeks
5
8
20
9
6
4
Calculate mean weekly cost of living index by using Step deviation Method
Answers
Answered by
0
Answer:
140
Explanation:
please explain your questions first .
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