Ap Stats Formula Sheet - 1 ∑ n − 1. X = ∑ n x xi. X r = i − x − y i y. 1 2 ∑ = n − 1 ( xi − x ) ∑ ( − xi x )2. Descriptive statistics 1 i i x xx nn ∑ =∑= ( ) ( ) 2 1 2 1 1 i xi xx s xx n n ∑− = ∑− = − − y a bx ˆ = + y a bx = + 1 1 ii xy xx y y r n ss −− = ∑−. Web formulas for ap statistics. Descriptive statistics, probability and distributions, and sampling distributions and inferential statistics. Y ˆ = a + bx. Web formulas and tables for ap statistics i. Y = a + bx.
X = ∑ n x xi. Web formulas and tables for ap statistics i. Y = a + bx. Web the formula sheet has three sections: Descriptive statistics, probability and distributions, and sampling distributions and inferential statistics. Web formulas and tables for ap statistics. Y ˆ = a + bx. Web formulas for ap statistics. X r = i − x − y i y. 1 ∑ n − 1. Descriptive statistics 1 i i x xx nn ∑ =∑= ( ) ( ) 2 1 2 1 1 i xi xx s xx n n ∑− = ∑− = − − y a bx ˆ = + y a bx = + 1 1 ii xy xx y y r n ss −− = ∑−. 1 2 ∑ = n − 1 ( xi − x ) ∑ ( − xi x )2.