Beginner Statistics
Chi-Square Tests
Chi-Square Test of Independence: Definition, Formula, and Example
A Chi-Square Test of Independence is used to determine whether or not there is a significant association between two categorical variables.
This tutorial explains the following:
The motivation...
Confidence Intervals
Confidence Interval for a Correlation Coefficient
A confidence interval for a correlation coefficient is a range of values that is likely to contain a population correlation coefficient with a certain level of...
Confidence Intervals
Confidence Interval for a Standard Deviation
A confidence interval for a standard deviation is a range of values that is likely to contain a population standard deviation with a certain level of...
Confidence Intervals
Confidence Interval for a Proportion
A confidence interval for a proportion is a range of values that is likely to contain a population proportion with a certain level of confidence.
This tutorial...
Confidence Intervals
Confidence Interval for the Difference Between Means
A confidence interval (C.I.) for a difference between means is a range of values that is likely to contain the true difference between two population means...
Confidence Intervals
Confidence Interval for a Mean
A confidence interval for a mean is a range of values that is likely to contain a population mean with a certain level of confidence.
This tutorial...
P-values and Effect Size
Bayes Factor: Definition + Interpretation
When we conduct a hypothesis test, we typically end up with a p-value that we compare to some alpha level to decide if we...
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