Microsoft® Excel® 2010 Formulas & Functions Inside Out

LOGEST()

Syntax. LOGEST(known_y’s,known_x’s,const,stats)

Definition. This function calculates the exponential curve in regression analyses and returns a value array describing this curve. Because this function returns an array of values, it must be entered as an array formula.

Arguments

• known_y’s (required). The y-values you already know from the relationship y = b * m^x

  • If the known_y’s array consists of a single column, then each column in the known_x’s array is interpreted as a separate variable.

  • If the known_y’s array consists of a single row, then each row in the known_x’s array is interpreted as a separate variable.

• known_x’s (optional). The x-values you already know from the relationship y = b * m^x

  • The known_x’s array can include one or more sets ...