Stat Formula Sheet

Stat Formula Sheet - 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 −− = ∑− y x br s = s ii. Y = a + bx. Web formulas and tables for ap statistics i. Web 0 if t, the observed test statistic, is in the critical region, ie t= x 65 1:2 (pg.38 of the notes), reject h 0 if t 1:96 = z =2or if t 1:96 = z. Web formulas for ap statistics. A ( ∪ b ) ( ) ( ) ( = p a + p b − p a ∩ b ) s. A ( ) | b. 1 ∑ n − 1. Web what’s on the ap stat formula sheet? X r = i − x − y i y.

) ( ∩ = A B.

X r = i − x − y i y. A ( ) | b. 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 −− = ∑− y x br s = s ii.

X = ∑ N X Xi.

Type of test test statistic reject h 0 if: Web what’s on the ap stat formula sheet? The information on the formula sheet is organized into clearly defined topics. A ( ∪ b ) ( ) ( ) ( = p a + p b − p a ∩ b ) s.

Probability And Distributions Pa B Pa Pb Pa B ( ) ( ) ( ) ( ) ∪= + − ∩ ( ) ( ) ( ) | Pa B P Ab Pb ∩ =

Web formulas and tables for ap statistics i. The variables are not defined on the formula sheet, so it is important to be familiar with them. The first page contains three topics: =2 ˙ 2 is unknown.

One Sample T Jtj= X 0 S= P N Jtj T N 1;

Y ˆ = a + bx. Web 0 if t, the observed test statistic, is in the critical region, ie t= x 65 1:2 (pg.38 of the notes), reject h 0 if t 1:96 = z =2or if t 1:96 = z. Paired t jtj= d s= p n jtj t 1 ∑ n − 1.