- Excel Functions - Home
- Compatibility Functions
- Compatibility Functions
- BETADIST Function
- BETAINV Function
- BINOMDIST Function
- CEILING Function
- CHIDIST Function
- CHIINV Function
- CHITEST Function
- CONFIDENCE Function
- COVAR Function
- CRITBINOM Function
- EXPONDIST Function
- FDIST Function
- FINV Function
- FLOOR Function
- FTEST Function
- GAMMADIST Function
- GAMMAINV Function
- HYPGEOMDIST Function
- LOGINV Function
- LOGNORMDIST Function
- MODE Function
- NEGBINOMDIST Function
- NORMDIST Function
- NORMINV Function
- NORMSDIST Function
- NORMSINV Function
- PERCENTILE Function
- PERCENTRANK Function
- POISSON Function
- QUARTILE Function
- RANK Function
- STDEV Function
- STDEVP Function
- TDIST Function
- TINV Function
- TTEST Function
- VAR Function
- VARP Function
- WEIBULL Function
- ZTEST Function
- Logical Functions
- Logical Functions
- AND Function
- FALSE Function
- IF Function
- IFERROR Function
- IFNA Function
- IFS Function
- NOT Function
- OR Function
- SWITCH Function
- TRUE Function
- XOR Function
- Text Functions
- Text Functions
- ARRAYTOTEXT Function
- BAHTTEXT Function
- CHAR Function
- CLEAN Function
- CODE Function
- CONCAT Function
- CONCATENATE Function
- DBCS Function
- DOLLAR Function
- Exact Function
- FIND Function
- FINDB Function
- FIXED Function
- LEFT Function
- LEFTB Function
- LEN Function
- LENB Function
- LOWER Function
- MID Function
- MIDB Function
- NUMBERVALUE Function
- PHONETIC Function
- PROPER Function
- REPLACE Function
- REPLACEB Function
- REPT Function
- RIGHT Function
- RIGHTB Function
- SEARCH Function
- SEARCHB Function
- SUBSTITUTE Function
- T Function
- TEXT Function
- TEXTAFTER Function
- TEXTBEFORE Function
- TEXTJOIN Function
- TEXTSPLIT Function
- TRIM Function
- UNICHAR Function
- UNICODE Function
- UPPER Function
- VALUE Function
- VALUETOTEXT Function
- Date & Time Functions
- Date & Time Functions
- DATE Function
- DATEDIF Function
- DATEVALUE Function
- DAY Function
- DAYS Function
- DAYS360 Function
- EDATE Function
- EOMONTH Function
- HOUR Function
- ISOWEEKNUM Function
- MINUTE Function
- MONTH Function
- NETWORKDAYS Function
- NETWORKDAYS.INTL Function
- NOW Function
- SECOND Function
- TIME Function
- TIMEVALUE Function
- TODAY Function
- WEEKDAY Function
- WEEKNUM Function
- WORKDAY Function
- WORKDAY.INTL Function
- YEAR Function
- YEARFRAC Function
- Cube Functions
- Cube Functions
- CUBEKPIMEMBER Function
- CUBEMEMBER Function
- CUBEMEMBERPROPERTY Function
- CUBERANKEDMEMBER Function
- CUBESET Function
- CUBESETCOUNT Function
- CUBEVALUE Function
- Math Functions
- Math Functions
- ABS Function
- AGGREGATE Function
- ARABIC Function
- BASE Function
- CEILING.MATH Function
- COMBIN Function
- COMBINA Function
- DECIMAL Function
- DEGREES Function
- EVEN Function
- EXP Function
- FACT Function
- FACTDOUBLE Function
- FLOOR.MATH Function
- GCD Function
- INT Function
- LCM Function
- LN Function
- LOG Function
- LOG10 Function
- MDETERM Function
- MINVERSE Function
- MMULT Function
- MOD Function
- MROUND Function
- MULTINOMIAL Function
- MUNIT Function
- ODD Function
- PI Function
- POWER Function
- PRODUCT Function
- QUOTIENT Function
- RADIANS Function
- RAND Function
- RANDBETWEEN Function
- ROMAN Function
- ROUND Function
- ROUNDDOWN Function
- ROUNDUP Function
- SERIESSUM Function
- SIGN Function
- SQRT Function
- SQRTPI Function
- SUBTOTAL Function
- SUM Function
- SUMIF Function
- SUMIFS Function
- SUMPRODUCT Function
- SUMSQ Function
- SUMX2MY2 Function
- SUMX2PY2 Function
- SUMXMY2 Function
- TRUNC Function
- Trigonometric Functions
- Trigonometric Functions
- ACOS
- ACOSH Function
- ACOT Function
- ACOTH Function
- ASIN Function
- ASINH Function
- ATAN Function
- ATAN2 Function
- ATANH Function
- COS Function
- COSH Function
- COT Function
- COTH Function
- CSC Function
- CSCH Function
- SEC Function
- SECH Function
- SIN Function
- SINH Function
- TAN Function
- TANH Function
- Database Functions
- Database Functions
- DAVERAGE
- DCOUNT
- DCOUNTA
- DGET
- DMAX
- DMIN
- DPRODUCT
- DSTDEV
- DSTDEVP
- DSUM
- DVAR
- DVARP
- Dynamic Array Functions
- Dynamic Array Functions
- FILTER Function
- RANDARRAY Function
- SEQUENCE Function
- SORT Function
- SORTBY Function
- UNIQUE Function
- XLOOKUP Function
- XMATCH Function
- Engineering Functions
- Engineering Functions
- BESSELI Function
- BESSELJ Function
- BESSELK Function
- BESSELY Function
- BIN2DEC Function
- BIN2HEX Function
- BIN2OCT Function
- BITAND Function
- BITLSHIFT Function
- BITOR Function
- BITRSHIFT Function
- BITXOR Function
- COMPLEX Function
- CONVERT Function
- DEC2BIN Function
- DEC2HEX Function
- DEC2OCT Function
- DELTA Function
- ERF Function
- ERF.PRECISE Function
- ERFC Function
- ERFC.PRECISE Function
- GESTEP Function
- HEX2BIN Function
- HEX2DEC Function
- HEX2OCT Function
- IMABS Function
- IMAGINARY Function
- IMARGUMENT Function
- IMCONJUGATE Function
- IMCOS Function
- IMCOSH Function
- IMCOT Function
- IMCSC Function
- IMCSCH Function
- IMDIV Function
- IMEXP Function
- IMLN Function
- IMLOG2 Function
- IMLOG10 Function
- IMPOWER Function
- IMPRODUCT Function
- IMREAL Function
- IMSEC Function
- IMSECH Function
- IMSIN Function
- IMSINH Function
- IMSQRT Function
- IMSUB Function
- IMSUM Function
- IMTAN Function
- OCT2BIN Function
- OCT2DEC Function
- OCT2HEX Function
- Financial Functions
- Financial Functions
- ACCRINT Function
- ACCRINTM Function
- AMORDEGRC Function
- AMORLINC Function
- COUPDAYBS Function
- COUPDAYS Function
- COUPDAYSNC Function
- COUPNCD Function
- COUPNUM Function
- COUPPCD Function
- CUMIPMT Function
- CUMPRINC Function
- DB Function
- DDB Function
- DISC Function
- DOLLARDE Function
- DOLLARFR Function
- DURATION Function
- EFFECT Function
- FV Function
- FVSCHEDULE Function
- INTRATE Function
- IPMT Function
- IRR Function
- ISPMT Function
- MDURATION Function
- MIRR Function
- NOMINAL Function
- NPER Function
- NPV Function
- ODDFPRICE Function
- ODDFYIELD Function
- ODDLPRICE Function
- ODDLYIELD Function
- PDURATION Function
- PMT Function
- PPMT Function
- PRICE Function
- PRICEDISC Function
- PRICEMAT Function
- PV Function
- RATE Function
- RECEIVED Function
- RRI Function
- SLN Function
- SYD Function
- TBILLEQ Function
- TBILLPRICE Function
- TBILLYIELD Function
- VDB Function
- XIRR Function
- XNPV Function
- YIELD Function
- YIELDDISC Function
- YIELDMAT Function
- Information Functions
- Information Functions
- CELL Function
- ERROR.TYPE Function
- INFO Function
- ISBLANK Function
- ISERR Function
- ISERROR Function
- ISEVEN Function
- ISFORMULA Function
- ISLOGICAL Function
- ISNA Function
- ISNONTEXT Function
- ISNUMBER Function
- ISODD Function
- ISREF Function
- ISTEXT Function
- N Function
- NA Function
- SHEET Function
- SHEETS Function
- TYPE Function
- Lookup & Reference Functions
- Lookup & Reference Functions
- ADDRESS Function
- AREAS Function
- CHOOSE Function
- COLUMN Function
- COLUMNS Function
- FORMULATEXT Function
- GETPIVOTDATA Function
- HLOOKUP Function
- HYPERLINK Function
- INDEX Function
- INDIRECT Function
- LOOKUP Function
- MATCH Function
- OFFSET Function
- ROW Function
- ROWS Function
- RTD Function
- TRANSPOSE Function
- VLOOKUP Function
- Statistical Functions
- Statistical Functions
- AVEDEV Function
- AVERAGE Function
- AVERAGEA Function
- AVERAGEIF Function
- AVERAGEIFS Function
- BETA.DIST Function
- BETA.INV Function
- BINOM.DIST Function
- BINOM.DIST.RANGE Function
- BINOM.INV Function
- CHISQ.DIST Function
- CHISQ.DIST.RT Function
- CHISQ.INV Function
- CHISQ.INV.RT Function
- CHISQ.TEST Function
- CONFIDENCE.NORM Function
- CONFIDENCE.T Function
- CORREL Function
- COUNT Function
- COUNTA Function
- COUNTBLANK Function
- COUNTIF Function
- COUNTIFS Function
- COVARIANCE.P Function
- COVARIANCE.S Function
- DEVSQ Function
- EXPON.DIST Function
- F.DIST Function
- F.DIST.RT Function
- F.INV Function
- F.INV.RT Function
- F.TEST 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
- GAMMA Function
- GAMMA.DIST Function
- GAMMA.INV Function
- GAMMALN Function
- GAMMALN.PRECISE Function
- GAUSS Function
- GEOMEAN
- GROWTH
- HARMEAN
- HYPGEOM.DIST
- INTERCEPT Function
- KURT Function
- LARGE Function
- LINEST Function
- LOGEST Function
- LOGNORM.DIST Function
- LOGNORM.INV Function
- MAX Function
- MAXA Function
- MAXIFS Function
- MEDIAN Function
- MIN Function
- MINA Function
- MINIFS Function
- MODE.MULT Function
- MODE.SNGL Function
- NEGBINOM.DIST Function
- NORM.DIST Function
- NORM.INV Function
- NORM.S.DIST Function
- NORM.S.INV Function
- PEARSON Function
- PERCENTILE.EXC
- PERCENTILE.INC
- PERCENTRANK.EXC
- PERCENTRANK.INC
- PERMUT
- PERMUTATIONA
- PHI
- POISSON.DIST
- PROB
- QUARTILE.EXC
- QUARTILE.INC
- RANK.AVG
- RANK.EQ
- RSQ
- SKEW
- SKEW.P
- SLOPE
- SMALL
- STANDARDIZE
- STDEV.P
- STDEV.S
- STDEVA
- STDEVPA
- STEYX
- T.DIST
- T.DIST.2T
- T.DIST.RT
- T.INV
- T.INV.2T
- T.TEST
- TREND
- TRIMMEAN Function
- VAR.P Function
- VAR.S Function
- VARA Function
- VARPA Function
- WEIBULL.DIST Function
- Z.TEST Function
- Web Functions
- Web Functions
- ENCODEURL Function
- FILTERXML Function
- WEBSERVICE Function
Excel - CONFIDENCE Function
CONFIDENCE Function
The CONFIDENCE function is part of Excels Statistical function category. It utilizes the normal distribution to retrieve the confidence interval representing the specific ranges for a large population mean. For example, it is used to identify football players' age ranges that fall under 21-year-old groups, predict product sales, help in customer review surveys, and identify hospitals' patient satisfaction scores.
CONFIDENCE.NORM and CONFIDENCE.T are the two variants of the Confidence function in Excel.
Compatibility
This advanced Excel function is compatible with the following versions of MS-Excel −
- Excel for Microsoft 365
- Excel for Microsoft 365 for Mac
- Excel for the web
- Excel 2021
- Excel 2021 for Mac
- Excel 2019
- Excel 2019 for Mac
- Excel 2016
- Excel 2013
Syntax
The syntax of CONFIDENCE function is as follows −
CONFIDENCE (alpha,standard_dev,size)
Arguments
You can use the following arguments with the CONFIDENCE function −
| Argument | Description | Required / Optional |
|---|---|---|
| Alpha | The significance level and the confidence level are correlated terms. If you set the Alpha to 0.05 which specifies a 95% confidence level. | Required |
| Standard_dev | It specifies the standard deviation for the specific sample. | Required |
| Size | It specifies the sample size for the given population. | Required |
Notes
- Mathematically, Confidence Level = 100*(1 - Alpha)% . For example, if the Confidence level equals 90%, then the Alpha parametric value becomes 0.1.
- The Excel CONFIDENCE function retrieves the #VALUE! Error for the non-numeric arguments.
- Either Alpha is negative and equal to zero, or the Alpha value is greater than zero, and then the CONFIDENCE function retrieves the #NUM! Error.
- Either Standard_dev is negative or equal to zero, CONFIDENCE receives the #NUM!.
- If the Size is less than one, then the Confidence function receives the #NUM! Error.
- The sample size would truncate if the size was not defined in the integer.
Examples of CONFIDENCE Function
Practice the following examples to learn the use of the CONFIDENCE function in Excel.
Example 1
Consider the sample dataset where numeric values of the population Standard Deviation, Alpha, and Sample Size are written in the cell range B4:B6. Enter the formula =CONFIDENCE(C5,C4, C6) in the C7 cell and press Enter to obtain the Confidence interval.
Example 2
The Excel CONFIDENCE function retrieves the #VALUE! Error for the non-numeric arguments.
Solution
Lets suppose the Alpha contains the text value. You may rewrite the text Henry in the C5 cell and enter the expression =CONFIDENCE(C5,C4, C6) in the C7 cell and press Enter. As you can see in this example, the #VALUE! Error obtained while executing this expression.
Example 3
Either Alpha is negative and equal to zero, or the Alpha value is greater than zero, and then the CONFIDENCE function retrieves the #NUM! Error.
Solution
The alpha parameter value must lie between 0 and 1; otherwise, a #NUM error may occur. You may enter the formula =CONFIDENCE(8,25,90) in the B10 cell and press Enter. As you know, the first argument denoted Alpha, set to 8 number.
Example 4
Either Standard_dev is negative or equal to zero, CONFIDENCE receives the #NUM!.
Solution
You can enter the formula =CONFIDENCE(-0.05,-12, 9) in the C7 cell and press the Enter tab.
Example 5
If the sample size is less than one, then the Confidence function receives the #NUM! error.
Solution
If you specify the third argument, Sample size, in the negative form, the Confidence function will generate the #NUM! error. You may enter the formula =CONFIDENCE(0.05, 85,-9) in the B10 cell and press the Enter tab.
Note − Make sure that all the given arguments inside the Confidence function should not be in a negative form.
Example 6
The sample size would truncate if the size was not defined in the integer.
Solution
Suppose you write the formula =CONFIDENCE(0.05,85,9.5) in the B10 cell. Here, the sample size of 9.5 is in decimal form and is truncated to number 9. You may press the Enter after writing the formula.
