By: Shamima Sultana

In reply to rahul.

Hello Rahul,

Thank you so much for your valuable feedback! You’re absolutely right, knowing how to make predictions after performing regression is essential for applying it effectively.

Once you’ve used Excel’s Data Analysis Toolpak to perform linear regression, you’ll receive an output with coefficients like this:
Intercept (α)
X Variable 1 Coefficient (β)

Let’s say the regression equation from your output is:
Y = α + βX

Step-by-Step to Make Predictions:
1. Identify Coefficients: From the regression output table:
Intercept = 2.5
X Coefficient = 1.8

So, the regression equation is:
Predicted Y = 2.5 + 1.8 * X

Create a Column for New X Values:
1. Suppose in column F (F2:F6), you input new X values (e.g., sales, height, etc.)
2. Use a Formula to Calculate Predicted Y:
3. In column G, enter the prediction formula:
=2.5 + 1.8 * F2
Drag this formula down to apply it for all new X values.

Regards
ExcelDemy