Formulas and Functions Help
- Welcome
- Intro to formulas and functions
-
- ACCRINT
- ACCRINTM
- BONDDURATION
- BONDMDURATION
- COUPDAYBS
- COUPDAYS
- COUPDAYSNC
- COUPNUM
- CUMIPMT
- CUMPRINC
- CURRENCY
- CURRENCYCODE
- CURRENCYCONVERT
- CURRENCYH
- DB
- DDB
- DISC
- EFFECT
- FV
- INTRATE
- IPMT
- IRR
- ISPMT
- MIRR
- NOMINAL
- NPER
- NPV
- PMT
- PPMT
- PRICE
- PRICEDISC
- PRICEMAT
- PV
- RATE
- RECEIVED
- SLN
- STOCK
- STOCKH
- SYD
- VDB
- XIRR
- XNPV
- YIELD
- YIELDDISC
- YIELDMAT
-
- AVEDEV
- AVERAGE
- AVERAGEA
- AVERAGEIF
- AVERAGEIFS
- BETADIST
- BETAINV
- BINOMDIST
- CHIDIST
- CHIINV
- CHITEST
- CONFIDENCE
- CORREL
- COUNT
- COUNTA
- COUNTBLANK
- COUNTIF
- COUNTIFS
- COVAR
- CRITBINOM
- DEVSQ
- EXPONDIST
- FDIST
- FINV
- FORECAST
- FREQUENCY
- GAMMADIST
- GAMMAINV
- GAMMALN
- GEOMEAN
- HARMEAN
- INTERCEPT
- LARGE
- LINEST
- LOGINV
- LOGNORMDIST
- MAX
- MAXA
- MAXIFS
- MEDIAN
- MIN
- MINA
- MINIFS
- MODE
- NEGBINOMDIST
- NORMDIST
- NORMINV
- NORMSDIST
- NORMSINV
- PERCENTILE
- PERCENTRANK
- PERMUT
- POISSON
- PROB
- QUARTILE
- RANK
- SLOPE
- SMALL
- STANDARDIZE
- STDEV
- STDEVA
- STDEVP
- STDEVPA
- TDIST
- TINV
- TTEST
- VAR
- VARA
- VARP
- VARPA
- WEIBULL
- ZTEST
ZTEST
The ZTEST function returns the one-tailed probability value of the Z-test.
ZTEST(value-set, value, stdev)
value-set: A collection of number values, date/time values or duration values. All values must be of the same value type.
value: The value to test. value is a single number value, date/time value or duration value.
stdev: An optional number value for the standard deviation of the population. stdev must be greater than 0.
Notes
The Z-test is a statistical test that determines if the difference between a sample mean and the population mean is large enough to be statistically significant. The Z-test is used primarily with standardised testing.
If stdev is omitted, the assumed sample standard deviation is used.
Example |
|---|
Suppose that cells B2 to G2 contain the values 57, 75, 66, 98, 92 and 80, respectively, and represent the value-set. The ZTEST value for this set, assuming a value to test (value) of 70 and a standard deviation (stdev) of 9, can be found with the formula: =ZTEST(B2:G2, 70, 9) The result is 0.0147281928162857. |