A research study was conducted to examine if a new antidepressant could lower depression for depressive adults. One sample of 10 depressed patients participated in this study. After four weeks of treatment, the patients completed the Beck Depression Inventory. The higher the score, the more depressed the patient. The data are presented below. What is the independent variable, and what is the operational definition of it? What is the dependent variable, and what is the operational definition of it? Participants 35 30 39 25 35 27 31 32 23 23
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
A research study was conducted to examine if a new antidepressant could lower depression for depressive adults. One sample of 10 depressed patients participated in this study. After four weeks of treatment, the patients completed the Beck Depression Inventory. The higher the score, the more depressed the patient. The data are presented below.
What is the independent variable, and what is the operational definition of it?
What is the dependent variable, and what is the operational definition of it?
|
Participants |
|
35 |
|
30 |
|
39 |
|
25 |
|
35 |
|
27 |
|
31 |
|
32 |
|
23 |
|
23 |
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