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LINEAR REGRESSION
CORRELATION
Hasriona Revision Guide

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Bivariate Data Consider the below results table, for the variables x and y.
5 10 15 20 25 30 35 40 45
40 44 106 91 175 138 169 175 187
Data that consists of pairs of values of two random variables, like the above table, is called
Bivariate data.…

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A line of best fit, called a least squares regression line in the Statistics world, will be a linear line.
Linear lines have the following formula:
The gradient, b, needs to be calculated, as well as the y-intercept, a. If the data follows a
negative relationship, then the gradient of…

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So what is the significance of this equation for the least squares regression line?
250
The straight line shown on the diagram to the left is the plotted version of the equation: 200
150 y
Fitting a straight line to a set of
Bivariate 100
data is called fitting a…

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Pages in this set

Page 1

Preview of page 1

Page 2

Preview of page 2
LINEAR REGRESSION
CORRELATION
Hasriona Revision Guide

Page 3

Preview of page 3

Page 4

Preview of page 4
Bivariate Data Consider the below results table, for the variables x and y.
5 10 15 20 25 30 35 40 45
40 44 106 91 175 138 169 175 187
Data that consists of pairs of values of two random variables, like the above table, is called
Bivariate data.…

Page 5

Preview of page 5

Page 6

Preview of page 6
A line of best fit, called a least squares regression line in the Statistics world, will be a linear line.
Linear lines have the following formula:
The gradient, b, needs to be calculated, as well as the y-intercept, a. If the data follows a
negative relationship, then the gradient of…

Page 7

Preview of page 7

Page 8

Preview of page 8

So what is the significance of this equation for the least squares regression line?
250
The straight line shown on the diagram to the left is the plotted version of the equation: 200
150 y
Fitting a straight line to a set of
Bivariate 100
data is called fitting a…

Page 9

Preview of page 9

Comments

No comments have yet been made