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Mathematics, 27.05.2020 19:01 tynan74

The ages of 11 students enrolled in an on-line macroeconomics course are given in the following steam-and-leaf display:

Stem Leaf

1 9 9
2 1 5 5 8 9
3 0 1 2
4 0
Here 1|9 implies 19 years (i. e. the stem represents tens and leaf represents units).

The standard deviation of the age distribution is years. [Answer up to four digits after decimal]

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