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This algorithm can easily be adapted to compute the variance of a finite population: simply divide by n instead of n − 1 on the last line.. Because SumSq and (Sum×Sum)/n can be very similar numbers, cancellation can lead to the precision of the result to be much less than the inherent precision of the floating-point arithmetic used to perform the computation.
It is a main ingredient in the generalized linear model framework and a tool used in non-parametric regression, [1] semiparametric regression [1] and functional data analysis. [2] In parametric modeling, variance functions take on a parametric form and explicitly describe the relationship between the variance and the mean of a random quantity.
Implemented as a logical spreadsheet, the user would be able to enter values into any of the cells. The user could type 1 into a and 2 into b, and the spreadsheet would compute the value 3 for c. Alternatively, the user could type 2 into b and 3 into c, and the spreadsheet would compute the value 1 for a. And so forth.
Excel offers many user interface tweaks over the earliest electronic spreadsheets; however, the essence remains the same as in the original spreadsheet software, VisiCalc: the program displays cells organized in rows and columns, and each cell may contain data or a formula, with relative or absolute references to other cells.
In probability theory and statistics, variance is the expected value of the squared deviation from the mean of a random variable. The standard deviation (SD) is obtained as the square root of the variance. Variance is a measure of dispersion, meaning it is a measure
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Cook onion, stirring occasionally, until slightly softened and lightly golden, 4 to 5 minutes. Add 3 cloves garlic and cook, stirring, until fragrant, about 1 minute; season with 1 teaspoon salt.
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