Please do a paragraph about this post with this instruction . post most have 4 or more sentences . you also have to have a high quality post from a content perspective. This means it also needs to do more than agree with or praise a class mate. If you agree with a classmate, explain why, give an example, share what you learned in the readings
Extraneous variables are undesirable variables that are encountered in a research and are known to influence the relationship between the variables under study (Grove, Gray & Burns, 2015). These variables are existent in all studies and can be a barrier to having a clear understanding of the relationships between variables.
There are two main variables used in an experiment. They are:
Independent variable: is the variable that is changed or controlled in an experiment to test its effectiveness on the dependent variable.
Dependent variable: is the variable that is being tested and measured in the experiment.
The researcher decreases or eliminates extraneous variables by controlling the extraneous variables. â€œControlling involves imposing of rules by researchers to decrease the possibility of error, thereby increasing the probability that the studyâ€™s findings are an accurate reflection of realityâ€ (Grove, Gray & Burns, 2015, p. 36.). Studies conducted without control on extraneous variables will show a correlation between the independent and dependent variable that doesnâ€™t truly exist without the intervention of a present extraneous variable. For example, a researcher is conducting a study on the effects of stimulants on patients that have attention deficit/hyperactivity disorder (ADHD). First of all, to conduct this research, the researcher has to control extraneous variables by selecting a particular age group, time, place, environment, type and dosage of medication. If the study is not controlled, the researcher will not get accurate results due to varying age group/gender, medication type and dosage, place and environment. Controlling extraneous variables enables researchers to determine the effects of an intervention or treatment on study outcomes more accurately (Grove, Gray & Burns, 2015).
“Looking for a Similar Assignment? Get Expert Help at an Amazing Discount!”