PSY202H1 Chapter 15: PSY202 - Chapter 15 (Lecture 5-6)
Document Summary
A correlation is a numerical value that describes and measures three characteristics of the relationship between. X and y: the direction of the relationship the sign of the correlation, positive of negative describes the relationship, positive correlation: two variables tend to change in the same direction. As the value of x variable increases from one individual to another, the y variable also tends to increase, and the same for decreasing: negative correlation: the two variables tend to go in opposite directions, an inverse relationship. Intermediate values = indicate degree of consistency football, the correlation is around 0. 7. The most common correlation is the pearson correlation: which measures the degree and direction of the linear relationship between two variables. The sum of products of deviations: defined as sp (value similar to ss) used to measure variability for a single variable. Mx mean for x scores and my is the mean for y scores.
