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Chapter 12
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 ...
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