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Introductory Statistics 2e

Formula Review

Introductory Statistics 2eFormula Review

Formula Review

12.1 Linear Equations

y = a + bx where a is the y-intercept and b is the slope. The variable x is the independent variable and y is the dependent variable.

12.4 Testing the Significance of the Correlation Coefficient

Least Squares Line or Line of Best Fit:

y ^ =a+bx y ^ =a+bx

where

a = y-intercept

b = slope

Standard deviation of the residuals:

s= SEE n−2 . s= SEE n−2 .

where

SSE = sum of squared errors

n = the number of data points

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