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

$20,553.00
$8,367.80
$12,039.40
$10,041.40

Answer 1

The answer would be $19,360.00.

4,995+8,626+15,970+31,367+41,807+55,202 equals the sum of 116,160. 116,160 divided by 6 is 19,360. Hope this helped!

Answer 2

Number of years between 1960 to 2010 = 2010-1960=50

So, average change will be = Difference in salaries of both years divided by difference in number of years(50)Answer:

Explanation: