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Earn +20 ptsQ: What is 78 plus 79 plus 80 plus 80 plus 81 plus 81?
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What is the mean of 78 79 80 80 81 81 81?
Assuming you mean the arithmetic mean, it is 80.
What is the variance in this problem 73 72 67 74 78 84 79 71 76 76 79 81 75 80 78 76 78?
The variance of 73 72 67 74 78 84 79 71 76 76 79 81 75 80 78 76 78 = 16.8456
What is the median 84 83 78 75 90 77 75 81 85 82 78 83 72 80 81 79 75 76 83 81 78 78?
83
What is 81 plus (a-3)?
78
What sums equal 80?
There are infinitely many. Involving integers (whole numbers) there are: 0 + 80, 1 + 79, 2 + 78, .... 78 + 2, 79 + 1, 80 + 0, 81 + -1, 82 + -2, ..... When you include non-integers there are: ½ + 79½, 1½ + 78½, ... 1.1 + 78.9, 1.2 + 78.8, .... 3.1 + 76.9, 3.14 + 76.86, 3.141 + 76.859, 3.1415 + 76.8585, 3.14159 + 76.85841, ...., π + (80 - π)
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