if the mean of the following data is 18.75 is, then find the value of p
xi 10 15 p 25 30
fi 5 10 7 8 2
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4
Answer:
10+15+p+25+30+5+10+7+8+2/10
=18.75
p+112/10=18.75
p =187.5-112
p=75.5
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10
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