Lee Fawcett calculates the standard deviation of a set of data. BQO - These are the keys you use to get O in symbol font on a computer. To calculate the population variance, use the formula \ Video ExampleÄr. Release the Alt key for typing the Oldly code to insert the symbol into your Word document. Whilst pressing down the Alt key, press the Summation sign alt code (228) using that numeric keypad.Use 228 for Summation symbol uppercase. Press and hold the Alt key in your keyboard. The population variance is the variance of the population. Place the insertion pointer show you need to choose the Addition symbol. There are two types: the population variance, usually denoted by $\sigma^2$ and the sample variance is usually denoted by $s^2$. The variance defines a measure of the spread or dispersion within a set of data. The symbol () indicating the addition of the numbers or quantities. Contents Toggle Main Menu 1 Variance 1.1 Definition 1.2 Population Variance 1.3 Sample Variance 1.4 Variance of a Random Variable 1.5 Variance of a discrete random variable 1.6 Variance of a continuous random variable 2 Standard Deviation 2.1 Definition 2.2 Population Standard Deviation 2.3 Sample Standard Deviation 3 Worked Example 3.1 Video Example 4 Workbook 5 External Resources Variance Definition How to Write SIGMA symbol in Word DOCUMENT is shown in this video. The 18th letter of the Greek alphabet, represented in the English alphabet as s.
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