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The manager of the Edgewater Cafe takes a reading of the cash register tape each hour. At 2:00 P.M. the tape read $913.93. At 3:00 P.M. the tape read $1354.42. Find the amount of sales between 2:00 P.M. and 3:00 P.M.
Covariance
A measure of how much two random variables change together.
Standard Deviation
A measure of the amount of variation or dispersion of a set of values; quantifies how much the values of a dataset deviate from the mean.
Interquartile Range
A measure of statistical dispersion, which is the difference between the first and third quartiles in a dataset, showing the spread of the middle 50% of values.
Closing Stock Price
The last price at which a stock is traded on a particular trading day, representing the final market valuation of the stock for that day.
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