How to Calculate and Interpret Correlation Coefficients
TL;DR: When two variables move together on a scatterplot, how do you measure how tight that relationship really is? Enter r, the correlation coefficient. It runs from negative 1 (a perfect downward line) through 0 (no linear pattern at all) up to positive 1 (a perfect upward line). The sign tells you the direction; the […]
Convert Between Decimals and Mixed Numbers
Converting between decimals and mixed numbers is a key skill for the GED Mathematical Reasoning test. Mixed numbers and decimals represent the same values in different forms, and being fluent in both directions lets you compare quantities, solve equations, and interpret real-world measurements with confidence. In this lesson What Are Decimals and Mixed Numbers? How […]
