LINEST

LINEST(known_y's [,known_x's] [,const] [,stats])

Returns the array of values for a straight line that best fits your data.

known_y's	The set of y-values for the equation (y = mx + c).
known_x's	(Optional) The set of x-values for the equation (y = mx + c).
const	(Optional) A logical value indicating whether the constant c is to equal 0: True (<> 0) = c is calculated normally (default) False (or 0) = c is equal to 0.
stats	(Optional) A logical value indicating whether to return additional regression statistics: False (or 0) = only the m-coefficients and the constant b are returned (default) True (<> 0) = additional regression statistics are returned

REMARKS

* For an illustrated example refer to the page under Advanced Functions
* This function always returns multiple values.
* This function can create a Dynamic Array Formula.
* Calculates the statistics for a line by using the "least squares" method.
* If "known_y's" is in a single column, then each column of "known_x's" is interpreted as a separate variable.
* If "known_y's" is in a single row, then each row of "known_x's" is interpreted as a separate variable.
* The "known_x's" can include one or more sets of variables.
* If "known_x's" is left blank, it is assumed to be the array {1,2,3,} that is the same size as "known_y's".
* If "const" = True, then c is calculated normally.
* If "const" = False, then c = 0 and the equation (y = mx) is used.
* If "const" is left blank, then True is used.
* If "stats" = False, then only the m-coefficients and the constant b are returned.
* If "stats" = True, then Additional Regression Statistics are returned.
* If "stats" is left blank, then False is used.
* If only one variable is used, "known_y's" and "known_x's" can be ranges of any shape, as long as they have equal dimensions.
* If more than one variable is used, "known_y's" must be a vector (that is, a range with a height of one row or a width of one column).
* For the Microsoft documentation refer to support.microsoft.com
* For the Google documentation refer to support.google.com

	A
1	{=LINEST({1,9,5,7},{0,4,2,3},True,False) } = {2,1}
2	{=LINEST({1,9,5,7},{0,4,2,3},False,False) } = {2.31,0}
3	{=LINEST({1,9,5,7},{0,4,2,3},True,True) } = {2.31,0;0.11,#N/A;0.99,0.63;384,3;154,1.2}