A researcher wants to compare the test scores of students taught using three different teaching methods: Lecture, Group Work, and Self-Study.

A nutritionist measures participants' weight before, during, and after a diet intervention.

A psychologist examines the effect of gender (male, female) and study method (online, in-person) on students' stress levels.

A health researcher tests if there is a significant difference in blood pressure before and after a specific treatment in the same group of patients.

A school administrator investigates the impact of two teaching strategies (new, traditional) on students' performance in both math and reading.

A sports psychologist examines the effect of two training programs (high-intensity, low-intensity) on athletes' endurance across three stages of training (beginning, middle, end).

A manager evaluates employee productivity across three departments (HR, Marketing, and IT) over three different time periods (Q1, Q2, Q3).

A medical researcher compares the cholesterol levels of three groups (low-fat diet, regular diet, high-fat diet) and wants to adjust for age as a covariate.

A scientist investigates the relationship between diet type (vegan, vegetarian, omnivore) and changes in body mass index while accounting for physical activity level.

A school administrator checks whether the average math score of Grade 5 students in their school differs significantly from the national mean.