Close Help Center ONLYOFFICE Docs Spreadsheet Editor User guides ONLYOFFICE Workspace ONLYOFFICE Groups ONLYOFFICE Docs Mail Server Talk Module ONLYOFFICE Groups Documents Module People Module Commmunity Module CRM Module Projects Module Mail Module Calendar Module ONLYOFFICE Docs All Editors Document Editor Program interface Introducing the Document Editor user interface File tab Home tab Insert tab Draw tab Layout tab References tab Forms tab Collaboration tab Protection tab View tab Plugins tab Basic operations Create a new document or open an existing one Copy/paste text passages, undo/redo your actions Change color scheme Page formatting Set page parameters Show/hide nonprinting characters Insert section breaks Insert headers and footers Insert date and time Insert page numbers Insert line numbers Insert footnotes Insert endnotes Convert endnotes and footnotes Add bookmarks Add watermark Add hyphenation Paragraph formatting Align your text in a paragraph Set up paragraph outline level Select background color for a paragraph Change paragraph indents Set paragraph line spacing Insert page breaks Add borders Set tab stops Create lists Create hanging indents Text formatting Apply formatting presets Set font type, size, and color Apply font decoration styles Copy/clear text formatting Add hyperlinks Insert cross-references Insert a drop cap Operations on objects Insert tables Use formulas in tables Insert images Insert autoshapes Insert charts Insert text objects Insert SmartArt objects Draw freehand on a document Add caption Insert symbols Align and arrange objects on a page Change text wrapping Insert content controls Create a table of contents Add and format a table of figures Insert videos Fillable forms Create fillable forms Mail Merge Use Mail Merge Math equations Insert equations Collaboration Sharing files and folders Co-editing documents in real time Communicating in real time Commenting documents Tracking changes Comparing and combining documents Version history Plugins Plugin manager Edit an image Create and insert diagrams Edit HTML Correct typography Count words Include a video Insert highlighted code Insert references Translate text Extract text from an image Read the text out loud Type via voice Replace a word by a synonym Upload a document to Wordpress Communicate while editing Make Audio and Video Calls Host and schedule Zoom meetings Use AI to write text Insert definitions Add pictures Tools and settings View document information Save, download, print your document Advanced settings of Document Editor View settings and navigation tools ONLYOFFICE Document Viewer Search and replace function Spell-checking AutoCorrect features Protecting documents with a password Helpful hints About Document Editor Supported formats of electronic documents Keyboard shortcuts Spreadsheet Editor Program interface Introducing the Spreadsheet Editor user interface File tab Home tab Insert tab Draw tab Layout tab Formula tab Data tab Pivot Table tab Collaboration tab Protection tab View tab Plugins tab Basic operations Create a new spreadsheet or open an existing one Cut/copy/paste data Undo/redo your actions Add external links to cells Operations with sheets Manage sheets Insert headers and footers Insert breaks Cell text formatting Set font type, size, style, and colors Add hyperlinks Clear text, format in a cell Editing cell properties Add borders Align data in cells Merge cells Change number format Editing rows/columns Add cells Insert or delete cells, rows, and columns Freeze rows and columns Split cells Sort and filter data Use formatted tables Create and edit pivot tables Create slicers for tables Group data Remove duplicates Conditional formatting Data validation Work with functions Insert functions Insert array formulas Use named ranges Watch window Goal Seek Calculate percentages Insert time Switch between languages in a table Operations on objects Insert images Insert charts Insert sparklines Insert and format autoshapes Insert text objects Wrap text Insert SmartArt objects Draw freehand on a spreadsheet Insert symbols and characters Manipulate objects Math equations Insert equations Collaboration Sharing files and folders Co-editing spreadsheets in real time Managing sheet view presets Communicating in real time Commenting spreadsheets Version history Protecting a spreadsheet Protecting a spreadsheet Protecting ranges Protecting your spreadsheets with a password Protecting a sheet Protecting a workbook Plugins Plugin manager Edit an image Include a video Insert highlighted code Translate text Replace a word by a synonym Communicate while editing Host and schedule Zoom meetings Use AI to write text Add pictures Tools and settings View file information Save/print/download your spreadsheet Scale a worksheet Advanced settings of Spreadsheet Editor View settings and navigation tools Search and replace functions Spell-checking AutoCorrect features Get data from TXT/CSV file Helpful hints About Spreadsheet Editor Supported formats of spreadsheets Keyboard shortcuts Presentation Editor Program interface Introducing the Presentation Editor user interface File tab Home tab Insert tab Draw tab Transitions tab Animation tab Collaboration tab View tab Plugins tab Basic operations Create a new presentation or open an existing one Copy/paste data, undo/redo your actions Working with slides Manage slides Set slide parameters Apply transitions Insert headers and footers, notes and handouts Preview your presentation Text formatting Insert and format your text Add hyperlinks Create lists Copy/clear formatting Operations on objects Insert and format autoshapes Insert and adjust images Insert and edit charts Insert and format tables Insert SmartArt objects Draw freehand on a slide Adding animations Creating a motion path animation Insert symbols and characters Fill objects and select colors Manipulate objects on a slide Align and arrange objects on a slide Math equations Insert equations Collaboration Sharing files and folders Co-editing presentations in real time Communicating in real time Commenting presentations Version history Plugins Plugin manager Edit an image Include a video Insert highlighted code Translate text Replace a word by a synonym Communicate while editing Host and schedule Zoom meetings Use AI to write text Add pictures Tools and settings View presentation information Save/print/download your presentation Advanced settings of Presentation Editor View settings and navigation tools Search and Replace Function Spell-checking AutoCorrect features Protecting presentations with a password Enable support for video playback in ONLYOFFICE Desktop Editors Helpful hints About Presentation Editor Supported formats of electronic presentations Keyboard shortcuts PDF Editor Program interface Introducing the PDF Editor user interface File tab Home tab Comment tab View tab Plugins tab Basic operations Open an existing PDF or create a new document Filling out a form Collaboration Sharing files and folders Communicating in real time Commenting PDFs Draw freehand on a PDF Plugins Edit HTML Count words Find a synonym Translate text Read the text out loud Communicate while editing Tools and settings View PDF information Save/print/download your PDF Advanced settings of PDF Editor View settings and navigation tools Search function Helpful hints About PDF Editor Keyboard shortcuts ONLYOFFICE Mobile Apps ONLYOFFICE Documents for iOS ONLYOFFICE Documents for Android ONLYOFFICE Projects for iOS ONLYOFFICE Web Editors Glossary Video FAQ General Technology Pricing Workspace Enterprise Edition Docs Enterprise Edition Docs Developer Edition ONLYOFFICE Groups Connectors Trial period TTEST Function statistical functions AVEDEV function AVERAGE function AVERAGEA function AVERAGEIF function AVERAGEIFS function BETADIST function BETA.DIST function BETA.INV function More articles BETAINV function BINOMDIST function BINOM.DIST function BINOM.DIST.RANGE function 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 TTEST function is one of the statistical functions. It is used to return the probability associated with a Student's t-Test. Use TTEST to determine whether two samples are likely to have come from the same two underlying populations that have the same mean. Syntax TTEST(array1, array2, tails, type) The TTEST function has the following arguments: Argument Description array1 The first range of numeric values. array2 The second range of numeric values. tails The number of distribution tails. If it is 1, the function uses the one-tailed distribution. If it is 2, the function uses the two-tailed distribution. type A numeric value that specifies the kind of t-Test to be performed. The possible values are listed in the table below. The type argument can be one of the following: Numeric value The kind of t-Test 1 Paired 2 Two-sample equal variance (homoscedastic) 3 Two-sample unequal variance (heteroscedastic) Notes How to apply the TTEST function. Examples The figure below displays the result returned by the TTEST function. 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