Question

In the United States, the average public school teacher currently earns an annual salary near $55,202. Reported national average salaries for the last six decades are listed below.
Year National Average

Teachers’ Salary
1960 $4,995
1970 $8,626
1980 $15,970
1990 $31,367
2000 $41,807
2010 $55,202
Determine the average mean salary for the six decades, 1960 – 2010.

$29,933.50
$25,268.50
$31,593.40
$26,327.80

Answer 1

For the first part 55,202+41,807+31,367+15,970+8,626+4,995 and that equals 157967$ now you have to divide that amounts by the total number of salaries so 157967 divided by 6 that equals 26327.83$