Final answer:
The steps in studying 3 or more variables with multiple regression designs involve deciding the independent and dependent variables, collecting data, drawing a scatter plot, calculating the least-squares regression line, finding the correlation coefficient, evaluating its significance, and interpreting the results.
Step-by-step explanation:
Steps in studying 3 or more variables with multiple regression designs
- Decide which variables should be the independent variables and which should be the dependent variable.
- Collect data for the variables.
- Draw a scatter plot of the data to visualize the relationship between the variables.
- Calculate the least-squares regression line to find the best-fitting line.
- Find the correlation coefficient to measure the strength and direction of the relationship.
- Evaluate the significance of the correlation coefficient.
- Interpret the results and draw conclusions based on the findings.