Statistics in Practice

An experiment is a planned activity carried out under controlled conditions. The purpose of an experiment is to investigate the relationship between two …

A study design is a set of techniques that allow a researcher to collect and analyze data from different variables defined for a specific research …

Observational studies are a type of analytical study where researchers observe events without any interventions. In other words, the researcher does not …

An experimental design is a systematic process that allows researchers to evaluate the relationship between dependent and independent variables. There are …

The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally …

Crossover experiments, also called the repeated-measurements design, is a study design in which all experimental units are exposed to all treatments in …

When conducting an experiment, it is crucial to have control to reduce bias and accurately measure the dependent variables. It also marks the results more …

Bias refers to any tendency that prevents a question from being considered unprejudiced. In research, bias occurs when one outcome or answer is selected …

Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control …

Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and …