Traditional Culture Encyclopedia - Weather inquiry - Recently, there have been different degrees of smog weather in many cities across the country, and air pollution has once again become a hot issue of concern to everyone. Hefei 20 13

Recently, there have been different degrees of smog weather in many cities across the country, and air pollution has once again become a hot issue of concern to everyone. Hefei 20 13

The average value of this set of data =110 (61+75+70+56+81+92+91+75+81) = 77.

This set of data is arranged in descending order as 56,665,438+0,70,75,75,865,438+0,865,438+0,965,438+0,965,438+0,92.

The 5th and 6th numbers are 758 1 respectively, so the median of this set of data is 75+8 12 = 78.

So choose B.