TREND - the Function Returns Values in a Linear Trend in Excel

This guide provides a practical overview of TREND - the Function Returns Values in a Linear Trend, including its main features, benefits, limitations, and important considerations.

Description: The function returns values in a linear trend.

Syntax: TREND (known_y's, [known_x's], [new_x's], [const])

Inside:

- known_y's : The set of known y values in the relationship y = b * m ^ x , is a required parameter.

+ If known_y's is in a single column or row -> each known_y's column or row is interpreted as a separate variable.

- known_x's: The set of known x values in the relationship y = b * m ^ x , is a required parameter.

+ known_x's may include 1 or more sets of variables.

+ If known_x's is omitted -> it is assumed to be an array of the same size as known_y's

- new_x's: Are the new x values that you want the function to return the values corresponding to the values of y.

+ new_x's must include a column (row) for each independent variable.

+ If new_x's is omitted -> it is assumed to be the same as known_x's.

+ If known_x's and new_x's are omitted -> it is assumed to be the same as known_y's size .

- const: The logical value determining the value of the constant b, is an optional value including the following values:

+ const = True or ignore -> b is calculated normally.

+ const = False or ignore -> b = 1 and m are adjusted such that: y = m ^ x.

Attention:

- The value of the returned formulas has the array formula type -> the function must be entered as an array formula.

- If known_y's ? 0 -> the function returns the #NUM! Error value

- When entering values for an argument with the following convention:

+ Use commas to separate values in the same row.

+ Use semicolons separating between rows together.

For example:

Revenue estimates for June, July and August are based on previous months as described in the following data table:

- In the cell to calculate enter the formula : = TREND (D6: D10, C6: C10)

- Press Enter -> return value is:

- Highlight the sales areas in June, July and August (D11: D13 areas) -> press F2:

- Press the key combination Ctrl + Shift + Enter -> estimated revenue for June, July and August is:

Above are instructions and some specific examples when using TREND function in Excel.

Good luck!