find the mean and mode for the following data classes10-20 20-30 30-40 40-50 50-60 60-70 70-80 frequency 4 8 10 12 10 4 2
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mean=fixi/fi
60+200+350+45×12+550+65×4+150=2110=fixi
4+8+10+12+10+4+2=50=fi
therefore mean=summision of fixi/if
=2110/5
therefore mean =42.5
60+200+350+45×12+550+65×4+150=2110=fixi
4+8+10+12+10+4+2=50=fi
therefore mean=summision of fixi/if
=2110/5
therefore mean =42.5
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