Question

The average of 20 numbers is 75 the number 86 was incorrectly read As 68 while calculating find the correct average.​

Answer 1

Answer:

74.1

Step-by-step explanation:

At first, the difference in the two numbers,

86-68=18

Now

75=x/20

75*20=x

x=1500

but x is wrong sum.

to find the right sum

x-18=1500-18

=1482

therefore corrected sum is 1482.

corrected mean=1482/20

=74.1