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A child, (and mathematical genius!) wishes to estimate the variability in the number of candies he can collect from houses during trick-or-treating. He randomly selects

A child, (and mathematical genius!) wishes to estimate the variability in the number of candies he can collect from houses during trick-or-treating. He randomly selects asampleof 20 houses, and records the number of candies he gets at each:

# Candies	# Houses
0 1 2 3 4	3 7 3 4 3

Find the sample variance he calculates using this data.

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