SLOPE Function in Excel

SLOPE Function in Excel

SLOPE function in Excel is categorized as statistical functions in Excel. In mathematical terms, the SLOPE returns the slope of a line between given data points in known y’s values and known x’s values. The slope of a linear regression line is the vertical distance/the horizontal distance between any of the two points on this line.

The Slope function returns the slope of a regressionRegressionRegression Analysis is a statistical approach for evaluating the relationship between 1 dependent variable & 1 or more independent variables. It is widely used in investing & financing sectors to improve the products & services further. read more line based on the data points recognized by known_y_values and known_x_values

SLOPE Formula in Excel

SLOPE Formula

SLOPE has two compulsory parameters, i.e., known_y’s and known_xs.

Compulsory Parameter:

  • known_y’s: it is an array of known y-values.
  • known_x’s: it is an array of known x-values

Here the length of the known_x’s data array should be the same length as known_y’s data array, and the value of the variance of the known x’s values must not be 0.


The SLOPE equation to find out the slope of the linear regression-line is as follows:

SLOPE Equation

where xand yare the sample means and calculated by average(x values) and average(y values).

How to Use SLOPE Function in Excel?

It is very simple and easy to use. Let us understand the working of the SLOPE function in some examples. It can be used as a worksheet function and as a VBA functionVBA FunctionVBA functions serve the primary purpose to carry out specific calculations and to return a value. Therefore, in VBA, we use syntax to specify the parameters and data type while defining the function. Such functions are called user-defined more.

You can download this SLOPE Function Excel Template here – SLOPE Function Excel Template

Example #1

In the first example, we have two data sets with the known y’s values and known x’s value.

Now calculate the slope from this data =SLOPE(A3:A22,B3:B22), and output will be 2.7, as shown in the below table.

SLOPE Function Example 1

The output will be:

SLOPE Function Example 1-1

Example #2

In the second example, we have month-wise data of known y’s value and known x’s value.

So here we can apply the SLOPE formula in excel as we used in the first example =SLOPE(E3:E22,F3:F22)

SLOPE Function Example 2 (2)

And the output will be 0.11, as shown in the below table.

SLOPE Function Example 2-1

SLOPE in Excel VBA

Suppose we have the X’s values located in the excel sheet range from A1 to A10, and Y’s values located in the given excel sheet from range B1 to B10, then we can calculate the SLOPE here by using the below VBA functions

Sub SLOPEcal()  // start the slope function scope

Dim x, y as Range //declare the range x and y

set x = Range(“A10:A10”) //set known x’s values to range x.
set y = Range(“B10:B10”)//set known y’s values to range y.
slope = Application.WorksheetFunction.Slope(y, x)  set

MsgBox slope // print the slope value in message box.

End sub // End the slope function

Things to Remember

  • SLOPE function through the #N/A! Error when the given array of known_x’s and array of known_y’s are of different lengths.

SLOPE Formula =SLOPE(A3:A12,B3:B15)

Example 3

  • SLOPE function through the #DIV/0! error when:
    • The variance of the given known_x’s evaluates to zero; or
    • Any of the given arrays (known_x’s or known_y’s) are empty.

Example 3

  • In the SLOPE function, if an array or reference argument contains text, logical values, or empty cells, the values are ignored; however, cells with the value zero are included.

Example 4

  • In the SLOPE function, the parameters must be numbers or names, arrays, or references that contain numbers.

SLOPE Function in Excel Video

Recommended Articles

This has been a guide to SLOPE Function in Excel. Here we discuss the SLOPE Formula in excel and how to use the SLOPE function along with excel example and downloadable excel templates. You may also look at these useful functions in excel –

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