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BINOM.INV function CHIDIST function CHIINV function CHISQ.DIST function CHISQ.DIST.RT function CHISQ.INV function CHISQ.INV.RT function CHITEST function CHISQ.TEST function CONFIDENCE function CONFIDENCE.NORM function CONFIDENCE.T function CORREL function COUNT function COUNTA function COUNTBLANK function COUNTIF function COUNTIFS function COVAR function COVARIANCE.P function COVARIANCE.S function CRITBINOM function DEVSQ function EXPON.DIST function EXPONDIST function F.DIST function FDIST function F.DIST.RT function F.INV function FINV function F.INV.RT function FISHER function FISHERINV function FORECAST function FORECAST.ETS function FORECAST.ETS.CONFINT function FORECAST.ETS.SEASONALITY function FORECAST.ETS.STAT function FORECAST.LINEAR function FREQUENCY function FTEST function F.TEST function GAMMA function GAMMA.DIST function GAMMADIST function GAMMA.INV function GAMMAINV function GAMMALN function GAMMALN.PRECISE function GAUSS function GEOMEAN function GROWTH function HARMEAN function HYPGEOMDIST function HYPGEOM.DIST function INTERCEPT function KURT function LARGE function LINEST function LOGEST function LOGINV function LOGNORM.DIST function LOGNORM.INV function LOGNORMDIST function MAX function MAXA function MAXIFS function MEDIAN function MIN function MINA function MINIFS function MODE function MODE.MULT function MODE.SNGL function NEGBINOMDIST function NEGBINOM.DIST function NORMDIST function NORM.DIST function NORMINV function NORM.INV function NORMSDIST function NORM.S.DIST function NORMSINV function NORM.S.INV function PEARSON function PERCENTILE function PERCENTILE.EXC function PERCENTILE.INC function PERCENTRANK function PERCENTRANK.EXC function PERCENTRANK.INC function PERMUT function PERMUTATIONA function PHI function POISSON function POISSON.DIST function PROB function QUARTILE function QUARTILE.EXC function QUARTILE.INC function RANK function RANK.AVG function RANK.EQ function RSQ function SKEW function SKEW.P function SLOPE function SMALL function STANDARDIZE function STDEV function STDEV.S function STDEVA function STDEVP function STDEV.P function STDEVPA function STEYX function TDIST function T.DIST function T.DIST.2T function T.DIST.RT function T.INV function T.INV.2T function TINV function TRIMMEAN function TREND function TTEST function T.TEST function UNIQUE function VAR function VARA function VARP function VAR.P function VAR.S function VARPA function WEIBULL function WEIBULL.DIST function ZTEST function Z.TEST function Using the AVERAGE function The LOGEST function is one of the statistical functions. It is used to calculate an exponential curve that fits the data and returns an array of values that describes the curve. Syntax LOGEST(known_y’s, [known_x’s], [const], [stats]) The LOGEST function has the following arguments: Argument Description known_y’s The set of y-values you already know in the y = b*m^x equation. known_x’s The optional set of x-values you might know in the y = b*m^x equation. const An optional argument. It is a TRUE or FALSE value where TRUE or lack of the argument forces b to be calculated normally and FALSE sets b to 1 in the y = b*m^x equation and m-values correspond with the y = m^x equation. stats An optional argument. It is a TRUE or FALSE value that sets whether additional regression statistics should be returned. Notes Please note that this is an array formula. To learn more, please read the Insert array formulas article. How to apply the LOGEST function. Examples The figure below displays the result returned by the LOGEST function. 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