Question

(50 points) (with explanation)
find the mean of following data. 80,85,100,60,71,90

Answer 1

to find mean we have to add up all the numbers and divide by the number of values....so 1st we will add up 85+80+100+60+71+90=486...now u have six values ie 80(1)....85 (2)...100(3)....60(4)....71 (5)...90 (6)....now we have to divide 486 by 6..ie 486÷6 we get 81!! hence the mean of 80,85,100,60,71,90 is 81....hope this helped pl mark as brainliest

Answer 2

Mean formula :  ∑fixi÷∑fi
                                        or  
                         Sum of observations ÷ number of observation 

Observations are : 80,85,100,60,71,90
Sum of the observations = 486 
number of observations = 6 

by substituting the above values in the formula 
⇒ 486 ÷ 6
⇒ 81 
∴ mean of the data i.e. 80,85,100,60,71,90 is "81"