The mean of 10 number is 50.If one more no. Is added. There mean is 50 itself.Find the added no.
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50 is the added number
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Answer:
Mean=Sum of all observations/Total no of observations
Let the numbers be x1, x2, x3, x4........x10
mean=50
50=x1+x2+x3+..........X10/10
500=x1+x2+x3+..........x10 equation no:1
now according to the question one more term is added then the total no of observations will become 11. Let the added term be x11 .
mean=50
50=x1+x2+x3........x10+x11/11
550=(x1+x2+x3.........x10)+x11 equation 2
from equation 1 x1 +x2+x3.........x10=500.Substituting equation:1 in equation:2
550=500+x11
550-500=x11
50=x11
Step-by-step explanation:
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