Key Statistical Concepts in Research Methods: Correlation, Confidence Intervals, and Inferential Tests

Correlation

Tells us about the strength and direction of the relationship between two variables.

Confidence Interval

Represents the range of values in which the RR for the population is likely to be found.

Confidence Limits

Not defined in the provided content.

Parametric Test

Parametric tests are used to make inferences about the population when specific conditions have been met.

T-test

A method to compare the means of two groups and determine if there is a statistically significant difference between the groups.

ANOVA

Analysis of variance used when the level of measurement is interval or ratio and there are more than two groups.

Odds Ratio

Tells you about the odds of an outcome or event such as a disease.

Relative Risk

Compares the probability of an outcome in two groups.

Hazards Ratio

Is a ratio of the hazard rate of one group to the hazard rate in another group.

Linear Regression

Used when the dependent variable is measured at the interval or ratio level.

Logistic Regression

When the dependent variable is continuous.

Chi-squared

Simplest method to analyze variables to find differences between groups.