Difference between revisions of "Documentation/How Tos/Calc: SLOPE function"
From Apache OpenOffice Wiki
< Documentation | How Tos
(Initial content) |
(→See also:) |
||
| Line 35: | Line 35: | ||
[[Documentation/How_Tos/Calc: Statistical functions|'''Statistical functions''']] | [[Documentation/How_Tos/Calc: Statistical functions|'''Statistical functions''']] | ||
| + | |||
| + | [[Documentation/How_Tos/Calc: Functions listed alphabetically|'''Functions listed alphabetically''']], | ||
| + | [[Documentation/How_Tos/Calc: Functions listed by category|'''Functions listed by category''']] | ||
Revision as of 15:59, 13 September 2008
SLOPE
Fits a straight line to data using linear regression and returns its slope.
Syntax:
SLOPE(yvalues; xvalues)
- yvalues and xvalues are single row or column ranges specifying points in a set of data. yvalues and xvalues must be the same size.
- SLOPE fits a straight line through these data points, using the linear regression method (least squares). It then returns the slope of that line.
- The equation of a straight line may be given as y = a + bx. The linear regression method calculates:
-
- and
-
.
-
- b is the slope, returned by this function.
- Advanced topic:
- The parameters xvalues and yvalues are always evaluated as array formulas.
Example:
SLOPE(B2:B6; A2:A6)
- where the x values in A2:A6 are 1, 2, 3, 4, 5 and the y values in B2:B6 are 2, 4, 6, 8, 11 returns 2.2. The equation of the straight line found is very nearly y = 2x - thus the slope is very nearly (but not quite) 2.
See also:
Functions listed alphabetically, Functions listed by category
