Question

What median of the data set is 81. what is the missing number

Answer 1

its 81.

Median is the middle number.
Rearrange the numbers to smallest to biggest.

70,77,80,_,82,87,88

if the median of the data set is 81 the middle number needs to be 81.

So the missing number is 81.

70,77,80,81,82,87,88