if thirty observations have an average of 20 and 20 observations have an average of 30 then what is the average of all observations?
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Answered by
0
Answer:
both are equal compared to each other
Answered by
0
Answer:
24
Step-by-step explanation:
sum of thirty observations = 20×30 = 600
sun of twenty observations = 30×20 = 600
Total sum = 600+600 = 1200
Total Observations = 30+20 = 50
Average = 1200/50 = 24
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