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Mathematics 10 Online
OpenStudy (anonymous):

Lucas recorded his lunch expenditure each day for one week in the table below. Day: Sunday: $4.85 Monday:$5.10 Tuesday: 5.50 Wednesday: $4.75 Thursday: $4.50 Friday: $5.00 Saturday: $6.00 Find the mean, standard deviation, and variance of Lucas' lunch expenditures. Round to the nearest thousandth.

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