Mean = add all the values and divide by the number of values:
(535 + 1201 + 2748 + 622 + 1450 + 3459 + 780 + 1773 + 3571 + 835 + 2021 + 4086 + 1020 + 2337 + 4532 ) / 15 =
30970/ 15 = 2064.67
Median = order from least to greatest, and find the middle number
535 - 622 - 780 - 835 - 1020 - 1201 - 1450 - 1773 - 2021 - 2337 - 2748 - 3459 - 3571 - 4086 - 4532
Median = 1773
Standard deviation:
Subtract the mean to each value, and then square it.
calculate the mean of the squared differences.
Take square root.
(535 - 2064.67 )^2 = 2,339,890
(622-2064.67)^2 = 2,081,296
(780 -2064.67)^2 = 1,650,377
(835-2064.67)^2 = 1,512,088
(1020-2064.67)^2 = 1,091,335
(1201-2064.67)^2 = 745,925
(1450 -2064.67)^2 = 377,819
(1773-2064.67)^2 = 85,071.4
(2021-2064.67)^2 = 1,907.06
(2337 -2064.67)^2 = 74,163.62
(2748-2064.67)^2 = 466,939
(3459-2064.67)^2 = 1,944,156.149
(3571-2064.67)^2 = 2,269,030
(4086-2064.67)^2 = 4,085,774
(4532-2064.67)^2 = 6,087,717
Find the mean of those values.
( Sum / 15 ) = 24,813,487/15 = 1,654,232.4
Square root of the result.
√1,654,232.4 = 1286.16
mean = 2064.67
median = 1773
standard deviation = 1286.16