Mathematics, 02.03.2020 17:09 mimacapa
To compute a standard deviation for a population: compute the sums of the squared deviations subtract the mean from each score to get deviation scores (x-u) square the deviation scores (x-u)^2 sum the deviation scores E(x-u)^2 compare variance (standard deviation^2) divide the sum of the squared deviations by the number of scores E(x-u)^2 / N take the square root of the variance to get to the standard deviation take the square root of E(x-u)^2 / N Computing standard deviation for a sample: similar except SS (sums of squares) is divided by N-1 and the sample mean (M) is used instead of the population mean (u). SD = square root of SS / N-1
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Astudent simplified a rational expression as shown.
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If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.
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