Question

the average of 20 numbers is 75 the number 86 was incorrectly read as 68 while calculating find the correct average?​

Answer 1

Step-by-step explanation:

20 numbers sum = 75

20

=> 20 numbers sum=75*20= 1500

Incorrect number=68

Correct number=86

so New sum=

1500-68+86=1518

n

So new mean= Sum of numbers

20

= 1518

20

=75.5

PLS MARK AS BRAINLIEST...

Answer 2

Answer:

The new average is 75.9

Step-by-step explanation:

The average of 20 numbers is found to be 75

Now, it is found that 86 was incorrectly read as 68.

So, the total of the 20 numbers=(75×20)

=1500

Now, the new total would be

=((1500-68)+86)

=(1432+86)

=1518

So, the new average is=(1518/20)

=75.9

Hence, the new average is 75.9.