निम्न बारम्बारता वितरण से माध्यिका ज्ञात करो:
वर्ग-अन्तराल :
10-20
20-3030-40
40-50 50-60
60-7070-80
बारम्बारता:
06
10
19
30
15
12
Answers
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0
Answer:
thanks for free points
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