Two Truths and a Lie

Two-Truths and A Lie

• I am a research consultant.

• I know 80% of all Statistics concepts.

• I never taught proving Plane Geometric concepts in a regular class.

Female at Birth

• 
• 
• 

Regression Analysis

• Regression analysis predicts the value of a dependent variable based on one or more independent variables.

• A high R-squared value always proves causation.

• Multiple regression involves more than one independent variable.

Outliers

• Outliers can significantly influence the results of statistical analyses.

• Detecting outliers is important for improving the validity of results.

• Outliers should always be removed from datasets.

ANOVA (Analysis of Variance)

• A significant ANOVA result implies all group means are different.

• ANOVA compares the means of three or more groups.

• Post hoc tests are used after a significant ANOVA to identify specific group differences.

Statistical Significance

• Statistical significance always means practical importance.

• A p-value less than 0.05 is often considered statistically significant.

• Statistical significance indicates the likelihood that a result is not due to chance.

t-Tests

• A paired t-test compares means from the same group at different times.

• An independent t-test compares the means of two unrelated groups.

• A t-test can analyze more than three groups at once.