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Assuming a normal distribution of incomes: 2672z = ( 2672 - 3036 ) / 950 = -0.383157895Pr{z
The deviation would be how much off it would be off. Since this is a sample, it is impossible to get completely accurate results.
histogram
# in Family Total Income before taxes1 $12,3002 $20,2003 $27,7004 $34,2005 $40,4006 $47,200Over 6 $47,200 plus $3,650 each
Income is quantitative