Random Assignment in Experiments

Random assignment in experiments helps researchers test cause and effect between two variables. An experiment is a planned activity carried out under controlled conditions. It is used to study how one variable affects another. The variable that causes change is the explanatory or independent variable. The variable that chang...

An experiment is a systematic approach to prove or disprove a hypothesis and uncover new knowledge. Statistics is often used to interpret the results of an experiment.

Consider an experiment to determine the relationship between mobile phone usage and sleep quality among college students.

These students, referred to as subjects, ar...