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1. On Monday, Tuesday, and Wednesday, you drink one or more cups of coffee while working on your statistics class from home. This past week

1. On Monday, Tuesday, and Wednesday, you drink one or more cups of coffee while working on your statistics class from home. This past week you had 1, 6, and 4 cups. Find the standard deviation for the number of cups for the past three days, and round your answer to 1 decimal place if needed.

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2. You are in a statistics class and have taken three tests. Your test scores are 79, 76, and 97. Find the variance for the three tests and round to 1 decimal place if needed.

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3. Going back as far as 1930, the past 21 FIFA Men's World Cup winners have scored the following number of goals during their tournament: 169, 171, 145, 147, 161, 171, 141, 115, 132, 146, 102, 97, 95, 89, 89, 126, 140, 88, 84, 70, and 70.

What is the range?

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