List what the a.) independent and b.) dependent variables are and c.) experimental and d.) control...

List what the a.) independent and b.) dependent variables are and c.) experimental and d.) control group are in the following study.

A study wanted to look at the effects of coffee on students' performance in school. The researchers gave one group of students one cup of coffee a day and gave another group a glass of warm water.

Expert Solution

Answer:

a.) independent: coffee

b.) dependent variables: students' performance

c.) experimental: the group which receives one cup of coffee a day.

d.) control group: the group which receives a glass of warm water

Explanation:

A variable in a study is said to be independent if it is being controlled or changed by the researcher such that it is independent to vary and a variable is said to be dependent if the outcome of this variable dependent on the other variable. In this study, the researcher wants to see the effect of coffee on students' performance in school which means the variable students' performance depends on the coffee. Hence the variable coffee is an independent variable and students' performance is a dependent variable

The group which receives the treatment (independent variable) is called the experimental group and the group which doesn't receive the treatment is called the control group. In this study, the group which receives one cup of coffee a day is the experimental group, and the group which receives a glass of warm water. is the control group

orchestra answered 2 years ago

what are dependent and independent variables

The null hypothesis for the chi-square test of independence is that the variables are a. Dependent b. Independent c. Related d. Always 0

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