Statistics Cheat Sheet Formulas

S sample standard deviation.

Statistics cheat sheet formulas. T x 1 x 2 s2 1 n1 1 n2 assuming unequal variances. The formula sheet is actually three pages that contain useful equations in descriptive statistics probability and inferential statistics. The cram charts and formula review sheets below are out of date and from 2020 when the exams we abbreviated with fewer units.

The most common methods are the T-score and Z-score for normal distributions. Checking Out Statistical Confidence Interval Critical Values Critical values z-values are an important component of confidence intervals the statistical technique for. -8 -4 -2 5 7 9.

Whether youre studying for an exam or just want to make sense of data around you every day knowing how and when to use data analysis techniques and formulas of statistics will help. -2 0 4 7 9. Table shows formulas for the components of the most common confidence intervals and keys for when to use them.

Users may download the statistics probability formulas in PDF format to use them offline to collect analyze interpret present organize numerical data in large quantities to design diverse statistical surveys experiments. Once you get the sample statistics you can determine the p-value through different methods. Statistics Cheat Sheet Basic Statistics Definitions.

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. 15525 5175 5175 1725. We decided to leave this post up in case you want to check them out but we have updated everything with FRESH cheat sheets.

1725 2519. T x 1 x 2 s1 2 n1 s2 2 n2 degrees of freedom n 1-1n 2-1 Read the table of t-distribution critical values for the p-value using the calculated t-statistic and degrees of freedom. Df n 2 20 2 18 04697 25161 14929 10232 14929 210104870 r r b r t SE b Find the t-test statistic and p-value for the effect cry count has on IQ.