How to Perform Linear Regression Analysis in Excel on Mac

Linear regression is a statistical technique used to establish a relationship between two variables, where one variable is dependent on the other. In this article, we will explore how to perform linear regression analysis in Excel on a Mac.

### Understanding Multiple R

Before we begin, it's essential to understand what Multiple R is. Multiple R is a correlation coefficient that measures the strength of a linear relationship between two variables. The higher the value of Multiple R, the stronger the relationship between the variables.

### Creating a Scatter Chart with a Trendline

To perform linear regression analysis in Excel, we need to create a scatter chart with a trendline. To do this:

1. Select the data range that includes the x-axis values (independent variable) and y-axis values (dependent variable).

2. Go to the 'Insert' tab and select 'Scatter Chart' from the dropdown menu.

3. Click on the first thumbnail, which is a basic scatter chart with no markers.

4. Select the two columns of data (x and y), including headers.

5. Right-click on any data point and select 'Add Trendline.'

6. In the 'Format Trendline' pane, select 'Linear Trendline' and 'Display Equation on Chart.'

### Understanding the Output

After adding the trendline, you will see a scatter plot with a regression line. The equation of the line is displayed on the chart. This equation represents the linear relationship between the two variables.

### Using Linear Regression in Practice

Let's say we have a dataset that includes age, bio-mass index (BMI), and medical expenses for individuals. We can use linear regression analysis to determine how these variables affect medical expenses. To do this:

1. Download the Linear Regression Excel Template.

2. Select the data range that includes the independent variable (age) and dependent variable (medical expenses).

3. Go to the 'Insert' tab and select 'Scatter Chart' from the dropdown menu.

4. Follow the same steps as before to add a trendline.

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In this article, we have learned how to perform linear regression analysis in Excel on a Mac. We understand what Multiple R is and how to create a scatter chart with a trendline using Excel's built-in functions. By following these steps, you can apply linear regression analysis to your own data and gain valuable insights into the relationships between variables.

Linear regression excel mac