MATH 1F92 Lecture Notes - Lecture 3: Dependent And Independent Variables, Scatter Plot
7 Oct 2016
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From our previous lecture, we developed scatter diagrams and learned about the correlation coefficient in order to find the strength and association between two variables. While a scatter diagram and correlation coefficient is a great first step to learning about the relationship between two variables, it still doesn"t allow us to make any predictions. ______________________ which is created in such a way so that most of the points are as close to it as possible. We will first do this in a rough way, and then find a more concrete method for finding this line. ____________ and solving for b: your equation of line of best fit will be y=mx+b. Example 1: a) using the data that created the scatter diagram, create a line of best fit. Now that we have this equation, we can substitute in some time in minutes a person exercises and we will receive a predicted heart rate for that amount of time.
