Find the mean from the following data Marks: 10-15 15-20 20-25 25-30 30-35 35-40 Number of student 3 6 8 10 7 6
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for meam the formula is =summ of all observation by 2
10+15+15+20+20+25-25+30+30+35+35+40/2=150
10+15+15+20+20+25-25+30+30+35+35+40/2=150
preet0786:
hiii
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all multplie the 2 150 answer
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