Review sheet exam 2

Review sheet exam 2 - 227-1,2,3,4 Malone, Fall, 2010 Review...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 227-1,2,3,4 Malone, Fall, 2010 Review sheet for Chaps 7, 8, 9, and 10 __________________________________________________ Inferential vs descriptive statistics Populations vs samples Parameters vs statistics Greek vs Roman alphabets Properties of the normal curve ubiquitous, simple, well-understood Data distributions vs sampling distributions Standard errors Why and when N matters Law of Large Numbers Central Limit Theorem what it says, when it applies, why it matters Standard (z) scores, standardization, unit normal distribution Reading a z table for percentiles Comparing scores to sample distributions, and means (or other statistics) to sampling distributions Null hypothesis significance testing - Six steps - Null hypothesis vs alternative / experimental hypothesis - One vs two-tails - Alpha / significance level - Critical values - Reject vs fail to reject null hypothesis Sample standard deviation vs estimate of population standard deviation vs known population standard deviation t-test vs z-test Degrees of freedom (df) Three kinds of t-test - One sample - Two dependent / paired / matched samples - Two independent samples Comparing a statistic to a standard error Understanding the calculation of standard errors for different tests Knowing when to use each test ___________________________________ Problem of multiple tests F test Analysis of Variance (ANOVA) Variability (sum of squares) vs Variance (mean squares) Sources of variability/variance - Between groups (signal) - Within groups (noise) - Total (Between + Within) ANOVA Source Table - Between-group Sums of Squares, (numerator) degrees of freedom, and Mean Square Within-group (error, residual) Sums of Squares, (denominator) degrees of freedom, and Mean Square - Total Sums of Squares and degrees of freedom - F statistic A priori (planned) comparisons (limited by numerator df) Post hoc comparisons - Tukey's Honestly Significant Difference (q statistic) - Bonferroni correction - ...
View Full Document

This note was uploaded on 02/21/2012 for the course PYSC 227 taught by Professor Fairchild during the Fall '10 term at South Carolina.

Page1 / 2

Review sheet exam 2 - 227-1,2,3,4 Malone, Fall, 2010 Review...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online