8-2 Inferences About Two Means: Dependent Samples
Use the formal procedures to test claims about two means from dependent samples and
construct confidence intervals to estimate the mean difference.
If one sample is related to the other, the sam
9-2 Linear Correlation
Determine whether a linear relationship exists between two variables.
A correlation exists between two variables when one of them is related to the
other in some way.
1. Correlation does not prove cause-effect.
2. No line
Identify the regression line and use it to predict values.
Regression Line Equation (line of best fit or least squares line):
Explanatory variable x and response variable y
If there is a significant linear correlation, the best p
8-3 Inferences About Two Means: Independent and Large Samples
Use the formal procedures to test claims about two means from large
independent samples and construct confidence intervals to estimate the
difference between two independent means.