Answer:
Mean: $1.16
Median: $1.165
Mode: $1.19
Explanation:
Order the numbers from smallest to largest:
$0.99
$1.01
$1.09
$1.14
$1.19
$1.19
$1.28
$1.39
The mean is the sum of these numbers divided by the count of the numbers.
0.99+1.01+1.09+1.14+1.19+1.19+1.28+1.39 = 9.28
There are 8 numbers.
9.28/8 = 1.16. That's your mean.
Median: That's the middle number when the numbers are lined up smallest to largest. We have 8 numbers so there's no single middle number. So we take the 2 numbers in the middle and average them (aka add them and divide by 2).
$0.99
$1.01
$1.09
$1.14 - - THESE are our 2 middle numbers.
$1.19
$1.19
$1.28
$1.39
So $1.14 + $1.19 = $2.33. Divide that by 2 = =1.165. That's your median.
The mode is the number that occurs the most times. (Sometimes there are multiple modes and sometimes there aren't any.)
So $1.19 is in there 2x. No other number repeats. That's the mode.