STAT151 Lecture Notes - Lecture 3: Total Variation, Statistical Process Control, Simple Linear Regression
4erikapadilla and 37146 others unlocked
4
STAT151 Full Course Notes
Verified Note
4 documents
Document Summary
Chapters 7 10: exploring relationship between variables - Definition: a scatter-plot is a graphical display for two quantitative variables. It uses the horizontal axis for the explanatory variable x and the vertical axis for the response y. The values of x and y for a subject are represented by a point relative to the two axes. The observations for the n subjects are n points on the scatter-plot. Example 1: find the scatter-plot of the following data x y. Definition: two quantitative variables are said to have a positive association when high value of x tend to occur with high value of y, and when low values of x tend to occur with low values of y. They are said to have a negative association when high values of one variable tend to pair with low values of the other variable, and low values of one pair with high values of the other.