find the mean by assumed mean method no.of plants-0-2 2-4 4-6 6-8 8-10 10-12 12-14 no.of workers-1 2 1 5 6 2 3
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Answer:
Step-by-step explanation:
CLASS INTERVAL NO. OF HOUSES Xi FiXi
0-2 1 1 1
2-4 2 3 6
4-6 1 5 5
6-8 5 7 35
8-10 6 9 54
10-12 2 11 22
12-14 3 13 39
______ _____
TOTAL 20 162
Mean = Σfixi / Σ fi
= 162/20
= 8.1