Formula Sheet For Statistics - Web n ∑ population mean: A b b ac x 2 −±√(2 −4 ) = for an arithmetic series: X = ∑ ( w • x ) ∑ w x ∑ mean for frequency table: Web understanding formulas for common statistics. Μ = x n weighted mean: 2 pure mathematics algebra for the quadratic equation 0ax2 +bx +c =: Web arithmetic series un = a + (n − 1)d sn = 1 n(a + l) = 1 n{2a + (n 2 − 1)d} 2 geometric series un = arn − 1 sn − n = a (1 r ) − r s∞ = a for r < 1 1− r summations ∑ r 2 = 1 n ( n + 1)(2 n + 1) 6 = 1 ∑ r 3 = 1 n 2 ( n 4 + 1) 2 = 1 binomial. Descriptive statistics x = 1 n ∑ ∑ xi = xi n s x = 1 ∑ n x )2 − − 1 ( xi x ) 2 ∑ ( − = xi n − 1 y. Web statistics (0390) list of formulae and tables of the normal distribution. After data has been collected, the first step in analyzing it is to crunch out some descriptive statistics to get a feeling for the data.
Μ = x n weighted mean: A b b ac x 2 −±√(2 −4 ) = for an arithmetic series: Web formulas and tables for ap statistics i. After data has been collected, the first step in analyzing it is to crunch out some descriptive statistics to get a feeling for the data. X = ∑ ( w • x ) ∑ w x ∑ mean for frequency table: 2 pure mathematics algebra for the quadratic equation 0ax2 +bx +c =: Web understanding formulas for common statistics. Web statistics (0390) list of formulae and tables of the normal distribution. Web arithmetic series un = a + (n − 1)d sn = 1 n(a + l) = 1 n{2a + (n 2 − 1)d} 2 geometric series un = arn − 1 sn − n = a (1 r ) − r s∞ = a for r < 1 1− r summations ∑ r 2 = 1 n ( n + 1)(2 n + 1) 6 = 1 ∑ r 3 = 1 n 2 ( n 4 + 1) 2 = 1 binomial. Descriptive statistics x = 1 n ∑ ∑ xi = xi n s x = 1 ∑ n x )2 − − 1 ( xi x ) 2 ∑ ( − = xi n − 1 y. Web n ∑ population mean: