The three ways through which a scientist can minimize bias in scientific investigations include the following: PROPER SAMPLING, REPETITION OF PROCEDURE AND USING BLIND STUDY.
Sampling refers to the studying of a small quantity of a particular thing in order to form an opinion about the whole population. The right amount of samples that is representative of the population under study should always be used. Repetition involves repeating a particular experiment several times in order to ensure that one gets the same results. Blind study refers to the type of experiment in which the control and the variable groups are conceal from the participants until after the end of the experiment. All these three factors work together to reduce the bias that may be present in a scientific investigation.
Answer;
Three ways that scientist can use to avoid bias are;
- Sampling method
- Using blind study
- Repetition
Explanation;
Sampling method involves the studying of a small quantity of a particular aspect in order to form an opinion about the whole population. To avoid bias its important to obtain samples that are appropriate and that would cover the entire participants studied.
-Repetition involves repeating a particular experiment several times in order to ensure that one gets the same results that is ensure accuracy of the results.
-Blind study involves an experiment in which the control and the variable groups are conceal from the participants until after the end of the experiment. It is an important factor to avoid bias in scientific research.