Which explains why there is a difference in the measures of center for the sets of data?
One set of data has more variation than the other.
There are no outliers in either set.
In each set, the distribution is clustered around one value.
The modes must be the same for each set.

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.

$3720

step-by-step explanation:

taxable income = $31000

as per the 2018-2019 us tax bracket, the tax rate is 12% for an individual whose taxable income is between $9,526 to $38,700.

so, the tax to be paid by him = 12% of 31000

= 0.12 * 31000     [12% converted to decimal as 0.12]

= $3720