5 the answer I took the test
If rounded to the nearest 100,000th it would be 600,000
if rounded to the nearest 10,000th it would be 550,000
<span>if rounded to the nearest 1,000 it would be 553,945</span>
The <span>Mean Absolute Deviation of 7,9,6,6 is 1 hope it helps <3</span>