calculate the mean of the following frequency table: x= 1,2,3,4 and f= 15,27,8,5
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Step-by-step explanation:
Sum fixi
=(15×1)+(27×2)+(8×3)+(5×4)
=15+54+24+20
=113
Sum fi
=15+27+8+5
=55
Mean=Sum fixi/Sumfi
Mean=113/55
Mean=2.054
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