PSYC 2002 Study Guide - Final Guide: Fot, Tabla, Complement Factor B
Document Summary
Collection, analysis, interpretation, explanations and presentations of observations and measurements. Data: symbols that represent some measureable aspect o o. Use measurements from samples to infer onto populations. Probability of a descriptive statistic being due to chance. Difference is due to chance and not to a real difference. 1st experiment: lady tasting tea - believed she could tell if milk or tea was poured o o o o in first. Type 1 error: when null hypothesis is rejected, but it shouldn"t have been; o probability of making type 1 error is known as alpha o probability of making a type 2 error is known as beta. Type 2 error: when null hypothesis isn"t rejected, but it should have been; *type 1 and 2 errors can be known as mistakes, but a decision error (rejecting/not rejecting) cannot be known as a mistake. Ability of stats to detect an effect when the effect is actually present.
