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Sigma
σ (sigma)
s is the sample standard deviation. it is computed by taking the square root of: sum(x-mean)2/n-1
The "more than" symbol is the > symbol. The "less than" symbol is the < symbol.
5m is equal to 5 meters. In the metric system, "m" is the symbol for meters, which is the standard unit of length. Therefore, 5m represents a distance of 5 meters.