| Index Entry |   |  Section | 
 
  | 
| " |  |  | 
 | ‘"’: |   | Tokens | 
 | “is defined as”: |   | BNF | 
 
  | 
| $ |  |  | 
 | $CASENUM: |   | System Variables | 
 | $DATE: |   | System Variables | 
 | $DATE11: |   | System Variables | 
 | $JDATE: |   | System Variables | 
 | $LENGTH: |   | System Variables | 
 | $SYSMIS: |   | System Variables | 
 | $TIME: |   | System Variables | 
 | $WIDTH: |   | System Variables | 
 
  | 
| & |  |  | 
 | ‘&’: |   | Logical Operators | 
 
  | 
| ' |  |  | 
 | ‘'’: |   | Tokens | 
 
  | 
| ( |  |  | 
 | (: |   | Functions | 
 | ‘(  )’: |   | Grouping Operators | 
 
  | 
| ) |  |  | 
 | ): |   | Functions | 
 
  | 
| * |  |  | 
 | ‘*’: |   | Arithmetic Operators | 
 | ‘**’: |   | Arithmetic Operators | 
 
  | 
| + |  |  | 
 | ‘+’: |   | Arithmetic Operators | 
 
  | 
| - |  |  | 
 | ‘-’: |   | Arithmetic Operators | 
 | ‘-’: |   | Arithmetic Operators | 
 
  | 
| . |  |  | 
 | ‘.’: |   | Attributes | 
 | .: |   | BNF | 
 
  | 
| / |  |  | 
 | ‘/’: |   | Arithmetic Operators | 
 
  | 
| < |  |  | 
 | <: |   | Relational Operators | 
 | <=: |   | Relational Operators | 
 | <>: |   | Relational Operators | 
 
  | 
| = |  |  | 
 | ‘=’: |   | Relational Operators | 
 
  | 
| > |  |  | 
 | ‘>’: |   | Relational Operators | 
 | >=: |   | Relational Operators | 
 
  | 
| _ |  |  | 
 | ‘_’: |   | Attributes | 
 
  | 
| | |  |  | 
 | ‘|’: |   | Logical Operators | 
 
  | 
| ~ |  |  | 
 | ‘~’: |   | Logical Operators | 
 | ~=: |   | Relational Operators | 
 
  | 
| A |  |  | 
 | absolute value: |   | Miscellaneous Mathematics | 
 | addition: |   | Arithmetic Operators | 
 | analysis of variance: |   | GLM | 
 | analysis of variance: |   | ONEWAY | 
 | AND: |   | Logical Operators | 
 | ANOVA: |   | GLM | 
 | ANOVA: |   | ONEWAY | 
 | arccosine: |   | Trigonometry | 
 | arcsine: |   | Trigonometry | 
 | arctangent: |   | Trigonometry | 
 | Area under curve: |   | ROC | 
 | arguments, invalid: |   | Date Construction | 
 | arguments, minimum valid: |   | Statistical Functions | 
 | arguments, of date construction functions: |   | Date Construction | 
 | arguments, of date extraction functions: |   | Date Extraction | 
 | arithmetic mean: |   | MEANS | 
 | arithmetic operators: |   | Arithmetic Operators | 
 | attributes of variables: |   | Attributes | 
 
  | 
| B |  |  | 
 | Backus-Naur Form: |   | BNF | 
 | bar chart: |   | FREQUENCIES | 
 | bar chart: |   | BAR CHART | 
 | bar chart: |   | CROSSTABS | 
 | Batch syntax: |   | Syntax Variants | 
 | binary formats: |   | Binary and Hexadecimal Numeric Formats | 
 | binomial test: |   | BINOMIAL | 
 | bivariate logistic regression: |   | LOGISTIC REGRESSION | 
 | BNF: |   | BNF | 
 | Boolean: |   | Boolean Values | 
 | Boolean: |   | Logical Operators | 
 | boxplot: |   | EXAMINE | 
 | bugs: |   | Bugs | 
 
  | 
| C |  |  | 
 | case conversion: |   | String Functions | 
 | case-sensitivity: |   | Tokens | 
 | case-sensitivity: |   | Tokens | 
 | cases: |   | Data Input and Output | 
 | changing directory: |   | CD | 
 | changing file permissions: |   | PERMISSIONS | 
 | chi-square: |   | CROSSTABS | 
 | chi-square test: |   | CHISQUARE | 
 | chi-square test of independence: |   | CROSSTABS | 
 | clustering: |   | QUICK CLUSTER | 
 | Cochran Q test: |   | COCHRAN | 
 | coefficient of concordance: |   | KENDALL | 
 | coefficient of variation: |   | Statistical Functions | 
 | comma separated values: |   | Reading data from other sources | 
 | command file: |   | Files | 
 | command syntax, description of: |   | BNF | 
 | commands, ordering: |   | Order of Commands | 
 | commands, structure: |   | Commands | 
 | commands, unimplemented: |   | Not Implemented | 
 | concatenation: |   | String Functions | 
 | conditionals: |   | Conditionals and Looping | 
 | consistency: |   | Testing data consistency | 
 | constructing dates: |   | Date Construction | 
 | constructing times: |   | Time Construction | 
 | control flow: |   | Conditionals and Looping | 
 | convention, TO: |   | Sets of Variables | 
 | copyright: |   | License | 
 | correlation: |   | CORRELATIONS | 
 | cosine: |   | Trigonometry | 
 | covariance: |   | CORRELATIONS | 
 | Cronbach’s Alpha: |   | RELIABILITY | 
 | cross-case function: |   | Miscellaneous Functions | 
 | currency formats: |   | Custom Currency Formats | 
 | custom attributes: |   | Attributes | 
 | custom tables: |   | CTABLES | 
 
  | 
| D |  |  | 
 | data: |   | Data Input and Output | 
 | data file: |   | Files | 
 | data files: |   | GET DATA /TYPE=TXT | 
 | data reduction: |   | FACTOR | 
 | Data, embedding in syntax files: |   | BEGIN DATA | 
 | data, embedding in syntax files: |   | DATA LIST | 
 | data, fixed-format, reading: |   | DATA LIST FIXED | 
 | data, reading from a file: |   | DATA LIST | 
 | databases: |   | Reading data from other sources | 
 | databases: |   | GET DATA /TYPE=PSQL | 
 | dataset: |   | Datasets | 
 | date examination: |   | Date Extraction | 
 | date formats: |   | Time and Date Formats | 
 | date, Julian: |   | Miscellaneous Functions | 
 | dates: |   | Time and Date | 
 | dates, concepts: |   | Time and Date Concepts | 
 | dates, constructing: |   | Date Construction | 
 | dates, day of the month: |   | Date Extraction | 
 | dates, day of the week: |   | Date Extraction | 
 | dates, day of the year: |   | Date Extraction | 
 | dates, day-month-year: |   | Date Construction | 
 | dates, in days: |   | Date Extraction | 
 | dates, in hours: |   | Date Extraction | 
 | dates, in minutes: |   | Date Extraction | 
 | dates, in months: |   | Date Extraction | 
 | dates, in quarters: |   | Date Extraction | 
 | dates, in seconds: |   | Date Extraction | 
 | dates, in weekdays: |   | Date Extraction | 
 | dates, in weeks: |   | Date Extraction | 
 | dates, in years: |   | Date Extraction | 
 | dates, mathematical properties of: |   | Time and Date Arithmetic | 
 | dates, month-year: |   | Date Construction | 
 | dates, quarter-year: |   | Date Construction | 
 | dates, time of day: |   | Date Extraction | 
 | dates, valid: |   | Time and Date | 
 | dates, week-year: |   | Date Construction | 
 | dates, year-day: |   | Date Construction | 
 | day of the month: |   | Date Extraction | 
 | day of the week: |   | Date Extraction | 
 | day of the year: |   | Date Extraction | 
 | day-month-year: |   | Date Construction | 
 | days: |   | Time Construction | 
 | days: |   | Time Extraction | 
 | days: |   | Date Extraction | 
 | days: |   | Date Extraction | 
 | decimal places: |   | OUTPUT | 
 | description of command syntax: |   | BNF | 
 | deviation, standard: |   | Statistical Functions | 
 | dictionary: |   | Datasets | 
 | directory: |   | CD | 
 | division: |   | Arithmetic Operators | 
 | DocBook: |   | Introduction | 
 
  | 
| E |  |  | 
 | Embedding data in syntax files: |   | BEGIN DATA | 
 | embedding data in syntax files: |   | DATA LIST | 
 | embedding fixed-format data: |   | DATA LIST FIXED | 
 | encoding, characters: |   | SET | 
 | EQ: |   | Relational Operators | 
 | equality, testing: |   | Relational Operators | 
 | erroneous data: |   | Identifying incorrect data | 
 | errors, in data: |   | Identifying incorrect data | 
 | examination, of times: |   | Time Extraction | 
 | Exploratory data analysis: |   | EXAMINE | 
 | Exploratory data analysis: |   | GRAPH | 
 | exponentiation: |   | Arithmetic Operators | 
 | expression: |   | BNF | 
 | expressions, mathematical: |   | Expressions | 
 | extraction, of dates: |   | Date Extraction | 
 | extraction, of time: |   | Time Extraction | 
 
  | 
| F |  |  | 
 | factor analysis: |   | FACTOR | 
 | factorial anova: |   | GLM | 
 | false: |   | Logical Operators | 
 | file definition commands: |   | Types of Commands | 
 | file handles: |   | File Handles | 
 | file mode: |   | PERMISSIONS | 
 | file, command: |   | Files | 
 | file, data: |   | Files | 
 | file, output: |   | Files | 
 | file, portable: |   | Files | 
 | file, syntax file: |   | Files | 
 | file, system: |   | Files | 
 | fixed effects: |   | GLM | 
 | fixed-format data, reading: |   | DATA LIST FIXED | 
 | flow of control: |   | Conditionals and Looping | 
 | formats: |   | Input and Output Formats | 
 | Friedman test: |   | FRIEDMAN | 
 | function, cross-case: |   | Miscellaneous Functions | 
 | functions: |   | Functions | 
 | functions, miscellaneous: |   | Miscellaneous Functions | 
 | functions, missing-value: |   | Missing Value Functions | 
 | functions, statistical: |   | Statistical Functions | 
 | functions, string: |   | String Functions | 
 | functions, time & date: |   | Time and Date | 
 
  | 
| G |  |  | 
 | GE: |   | Relational Operators | 
 | geometric mean: |   | MEANS | 
 | Gnumeric: |   | GET DATA /TYPE=GNM/ODS | 
 | Graphic user interface: |   | Invoking PSPPIRE | 
 | greater than: |   | Relational Operators | 
 | greater than or equal to: |   | Relational Operators | 
 | grouping operators: |   | Grouping Operators | 
 | GT: |   | Relational Operators | 
 
  | 
| H |  |  | 
 | harmonic mean: |   | MEANS | 
 | headers: |   | SET | 
 | hexadecimal formats: |   | Binary and Hexadecimal Numeric Formats | 
 | histogram: |   | FREQUENCIES | 
 | histogram: |   | EXAMINE | 
 | histogram: |   | HISTOGRAM | 
 | hours: |   | Time Extraction | 
 | hours: |   | Date Extraction | 
 | hours-minutes-seconds: |   | Time Construction | 
 | HTML: |   | Introduction | 
 | HTML: |   | HTML Output Options | 
 | Hypothesis testing: |   | Hypothesis Testing | 
 
  | 
| I |  |  | 
 | identifiers: |   | Tokens | 
 | identifiers, reserved: |   | Tokens | 
 | inequality, testing: |   | Relational Operators | 
 | input: |   | Data Input and Output | 
 | input program commands: |   | Types of Commands | 
 | integer: |   | BNF | 
 | integers: |   | Tokens | 
 | Interactive syntax: |   | Syntax Variants | 
 | intersection, logical: |   | Logical Operators | 
 | introduction: |   | Introduction | 
 | inverse cosine: |   | Trigonometry | 
 | inverse sine: |   | Trigonometry | 
 | inverse tangent: |   | Trigonometry | 
 | inversion, logical: |   | Logical Operators | 
 | Inverting data: |   | Inverting negatively coded variables | 
 | invocation: |   | Invoking PSPP | 
 | Invocation: |   | Invoking pspp-convert | 
 | Invocation: |   | Invoking pspp-output | 
 | Invocation: |   | Invoking pspp-dump-sav | 
 
  | 
| J |  |  | 
 | Julian date: |   | Miscellaneous Functions | 
 
  | 
| K |  |  | 
 | K-means clustering: |   | QUICK CLUSTER | 
 | Kendall’s W test: |   | KENDALL | 
 | keywords: |   | BNF | 
 | Kolmogorov-Smirnov test: |   | KOLMOGOROV-SMIRNOV | 
 | Kruskal-Wallis test: |   | KRUSKAL-WALLIS | 
 
  | 
| L |  |  | 
 | labels, value: |   | Attributes | 
 | labels, variable: |   | Attributes | 
 | language, command structure: |   | Commands | 
 | language, lexical analysis: |   | Tokens | 
 | language, PSPP: |   | Introduction | 
 | language, PSPP: |   | Language | 
 | language, tokens: |   | Tokens | 
 | LE: |   | Relational Operators | 
 | length: |   | SET | 
 | less than: |   | Relational Operators | 
 | less than or equal to: |   | Relational Operators | 
 | lexical analysis: |   | Tokens | 
 | licence: |   | License | 
 | license: |   | License | 
 | Likert scale: |   | Inverting negatively coded variables | 
 | linear regression: |   | Linear Regression | 
 | linear regression: |   | REGRESSION | 
 | locale: |   | SET | 
 | logarithms: |   | Mathematics | 
 | logical intersection: |   | Logical Operators | 
 | logical inversion: |   | Logical Operators | 
 | logical operators: |   | Logical Operators | 
 | logical union: |   | Logical Operators | 
 | logistic regression: |   | LOGISTIC REGRESSION | 
 | loops: |   | Conditionals and Looping | 
 | LT: |   | Relational Operators | 
 
  | 
| M |  |  | 
 | macro: |   | DEFINE | 
 | Mann-Whitney U test: |   | MANN-WHITNEY | 
 | mathematical expressions: |   | Expressions | 
 | mathematics: |   | Functions | 
 | mathematics, advanced: |   | Mathematics | 
 | mathematics, applied to times & dates: |   | Time and Date Arithmetic | 
 | mathematics, miscellaneous: |   | Miscellaneous Mathematics | 
 | maximum: |   | Statistical Functions | 
 | McNemar test: |   | MCNEMAR | 
 | mean: |   | Statistical Functions | 
 | means: |   | MEANS | 
 | measurement level: |   | Attributes | 
 | median: |   | Statistical Functions | 
 | Median test: |   | MEDIAN | 
 | membership, of set: |   | Set Membership | 
 | memory, amount used to store cases: |   | SET | 
 | minimum: |   | Statistical Functions | 
 | minimum valid number of arguments: |   | Statistical Functions | 
 | minutes: |   | Time Extraction | 
 | minutes: |   | Date Extraction | 
 | missing values: |   | Missing Observations | 
 | missing values: |   | Attributes | 
 | missing values: |   | Missing Value Functions | 
 | mode: |   | PERMISSIONS | 
 | modulus: |   | Miscellaneous Mathematics | 
 | modulus, by 10: |   | Miscellaneous Mathematics | 
 | month-year: |   | Date Construction | 
 | months: |   | Date Extraction | 
 | multiplication: |   | Arithmetic Operators | 
 
  | 
| N |  |  | 
 | names, of functions: |   | Functions | 
 | NE: |   | Relational Operators | 
 | negation: |   | Arithmetic Operators | 
 | nonparametric tests: |   | NPAR TESTS | 
 | nonterminals: |   | BNF | 
 | normality, testing: |   | Testing for normality | 
 | normality, testing: |   | EXAMINE | 
 | normality, testing: |   | GRAPH | 
 | NOT: |   | Logical Operators | 
 | npplot: |   | EXAMINE | 
 | null hypothesis: |   | Hypothesis Testing | 
 | number: |   | BNF | 
 | numbers: |   | Tokens | 
 | numbers, converting from strings: |   | String Functions | 
 | numbers, converting to strings: |   | String Functions | 
 | numeric formats: |   | Basic Numeric Formats | 
 
  | 
| O |  |  | 
 | obligations, your: |   | License | 
 | observations: |   | Data Input and Output | 
 | OpenDocument: |   | GET DATA /TYPE=GNM/ODS | 
 | operations, order of: |   | Order of Operations | 
 | operator precedence: |   | Order of Operations | 
 | operators: |   | Tokens | 
 | operators: |   | BNF | 
 | operators: |   | Functions | 
 | operators, arithmetic: |   | Arithmetic Operators | 
 | operators, grouping: |   | Grouping Operators | 
 | operators, logical: |   | Logical Operators | 
 | OR: |   | Logical Operators | 
 | order of commands: |   | Order of Commands | 
 | order of operations: |   | Order of Operations | 
 | output: |   | Data Input and Output | 
 | output file: |   | Files | 
 
  | 
| P |  |  | 
 | p-value: |   | Hypothesis Testing | 
 | pager: |   | SET | 
 | parentheses: |   | Grouping Operators | 
 | parentheses: |   | Functions | 
 | PDF: |   | Introduction | 
 | PDF: |   | PDF PostScript SVG and PNG Output Options | 
 | percentiles: |   | FREQUENCIES | 
 | percentiles: |   | EXAMINE | 
 | period: |   | Attributes | 
 | piechart: |   | FREQUENCIES | 
 | PNG: |   | PDF PostScript SVG and PNG Output Options | 
 | portable file: |   | Files | 
 | postgres: |   | GET DATA /TYPE=PSQL | 
 | PostScript: |   | Introduction | 
 | Postscript: |   | PDF PostScript SVG and PNG Output Options | 
 | precedence, operator: |   | Order of Operations | 
 | precision, of output: |   | OUTPUT | 
 | principal axis factoring: |   | FACTOR | 
 | principal components analysis: |   | FACTOR | 
 | print format: |   | Attributes | 
 | procedures: |   | Types of Commands | 
 | productions: |   | BNF | 
 | productions: |   | BNF | 
 | PSPP language: |   | Introduction | 
 | PSPP, command structure: |   | Commands | 
 | PSPP, invoking: |   | Invoking PSPP | 
 | PSPP, language: |   | Language | 
 | pspp-convert: |   | Invoking pspp-convert | 
 | pspp-dump-sav: |   | Invoking pspp-dump-sav | 
 | pspp-output: |   | Invoking pspp-output | 
 | PSPPIRE: |   | Invoking PSPPIRE | 
 | punctuators: |   | Tokens | 
 | punctuators: |   | BNF | 
 
  | 
| Q |  |  | 
 | Q, Cochran Q: |   | COCHRAN | 
 | quarter-year: |   | Date Construction | 
 | quarters: |   | Date Extraction | 
 
  | 
| R |  |  | 
 | reading data: |   | Reading data from a text file | 
 | reading data from a file: |   | DATA LIST | 
 | reading fixed-format data: |   | DATA LIST FIXED | 
 | reals: |   | Tokens | 
 | Receiver Operating Characteristic: |   | ROC | 
 | recoding data: |   | Dealing with suspicious data | 
 | regression: |   | REGRESSION | 
 | reliability: |   | Testing data consistency | 
 | replacing substrings: |   | String Functions | 
 | reserved identifiers: |   | Tokens | 
 | restricted expressions: |   | Matrix Expressions | 
 | restricted transformations: |   | Types of Commands | 
 | rights, your: |   | License | 
 | rounding: |   | Miscellaneous Mathematics | 
 | runs test: |   | RUNS | 
 
  | 
| S |  |  | 
 | saving: |   | Saving data to a PSPP file. | 
 | scatterplot: |   | SCATTERPLOT | 
 | scratch variables: |   | Scratch Variables | 
 | screening: |   | Data Screening and Transformation | 
 | searching strings: |   | String Functions | 
 | seconds: |   | Time Extraction | 
 | seconds: |   | Date Extraction | 
 | set membership: |   | Set Membership | 
 | Shapiro-Wilk: |   | EXAMINE | 
 | sign test: |   | SIGN | 
 | sine: |   | Trigonometry | 
 | spreadlevel plot: |   | EXAMINE | 
 | spreadsheet files: |   | GET DATA /TYPE=GNM/ODS | 
 | spreadsheets: |   | Reading data from other sources | 
 | square roots: |   | Mathematics | 
 | standard deviation: |   | Statistical Functions | 
 | start symbol: |   | BNF | 
 | statistics: |   | Statistical Functions | 
 | string: |   | BNF | 
 | string formats: |   | String Formats | 
 | string functions: |   | String Functions | 
 | strings: |   | Tokens | 
 | strings, case of: |   | String Functions | 
 | strings, case of: |   | String Functions | 
 | strings, concatenation of: |   | String Functions | 
 | strings, converting from numbers: |   | String Functions | 
 | strings, converting to numbers: |   | String Functions | 
 | strings, finding length of: |   | String Functions | 
 | strings, padding: |   | String Functions | 
 | strings, replacing substrings: |   | String Functions | 
 | strings, taking substrings of: |   | String Functions | 
 | strings, trimming: |   | String Functions | 
 | strings, trimming: |   | String Functions | 
 | strings, truncating: |   | String Functions | 
 | substrings: |   | String Functions | 
 | subtraction: |   | Arithmetic Operators | 
 | sum: |   | Statistical Functions | 
 | SVG: |   | PDF PostScript SVG and PNG Output Options | 
 | symbol, start: |   | BNF | 
 | syntax file: |   | Files | 
 | SYSMIS: |   | Dealing with suspicious data | 
 | system file: |   | Files | 
 | system files: |   | Reading data from a pre-prepared PSPP file | 
 | system variables: |   | System Variables | 
 | system-missing: |   | Logical Operators | 
 
  | 
| T |  |  | 
 | T-test: |   | Testing for differences of means | 
 | tables, custom: |   | CTABLES | 
 | tangent: |   | Trigonometry | 
 | terminals: |   | BNF | 
 | terminals and nonterminals, differences: |   | BNF | 
 | testing for equality: |   | Relational Operators | 
 | testing for inequality: |   | Relational Operators | 
 | TeX: |   | TeX Output Options | 
 | tex: |   | TeX Output Options | 
 | text files: |   | GET DATA /TYPE=TXT | 
 | time: |   | Date Extraction | 
 | time examination: |   | Time Extraction | 
 | time formats: |   | Time and Date Formats | 
 | time, concepts: |   | Time and Date Concepts | 
 | time, in days: |   | Time Construction | 
 | time, in days: |   | Time Extraction | 
 | time, in days: |   | Date Extraction | 
 | time, in hours: |   | Time Extraction | 
 | time, in hours: |   | Date Extraction | 
 | time, in hours-minutes-seconds: |   | Time Construction | 
 | time, in minutes: |   | Time Extraction | 
 | time, in minutes: |   | Date Extraction | 
 | time, in seconds: |   | Time Extraction | 
 | time, in seconds: |   | Date Extraction | 
 | time, instants of: |   | Time and Date Concepts | 
 | time, intervals: |   | Time and Date Concepts | 
 | time, lengths of: |   | Time Extraction | 
 | time, mathematical properties of: |   | Time and Date Arithmetic | 
 | times: |   | Time and Date | 
 | times, constructing: |   | Time Construction | 
 | times, in days: |   | Date Extraction | 
 | tnumbers: |   | SET | 
 | TO convention: |   | Sets of Variables | 
 | tokens: |   | Tokens | 
 | transformation: |   | Data Screening and Transformation | 
 | transformations: |   | Types of Commands | 
 | transformations: |   | Data Manipulation | 
 | trigonometry: |   | Trigonometry | 
 | troubleshooting: |   | Bugs | 
 | true: |   | Logical Operators | 
 | truncation: |   | Miscellaneous Mathematics | 
 | type of variables: |   | Attributes | 
 
  | 
| U |  |  | 
 | U, Mann-Whitney U: |   | MANN-WHITNEY | 
 | unimplemented commands: |   | Not Implemented | 
 | union, logical: |   | Logical Operators | 
 | univariate analysis of variance: |   | GLM | 
 | utility commands: |   | Types of Commands | 
 
  | 
| V |  |  | 
 | value label: |   | Miscellaneous Functions | 
 | value labels: |   | Attributes | 
 | values, Boolean: |   | Boolean Values | 
 | values, missing: |   | Missing Observations | 
 | values, missing: |   | Attributes | 
 | values, missing: |   | Missing Value Functions | 
 | values, system-missing: |   | Logical Operators | 
 | var-list: |   | BNF | 
 | var-name: |   | BNF | 
 | variable: |   | Datasets | 
 | variable labels: |   | Attributes | 
 | variable names, ending with period: |   | Attributes | 
 | variable role: |   | Attributes | 
 | variables: |   | Defining Variables | 
 | Variables: |   | Manipulating Variables | 
 | variables, attributes of: |   | Attributes | 
 | variables, system: |   | System Variables | 
 | variables, type: |   | Attributes | 
 | variables, width: |   | Attributes | 
 | variance: |   | Statistical Functions | 
 | variation, coefficient of: |   | Statistical Functions | 
 
  | 
| W |  |  | 
 | week: |   | Date Extraction | 
 | week-year: |   | Date Construction | 
 | weekday: |   | Date Extraction | 
 | white space, trimming: |   | String Functions | 
 | white space, trimming: |   | String Functions | 
 | width: |   | SET | 
 | width of variables: |   | Attributes | 
 | wilcoxon matched pairs signed ranks test: |   | WILCOXON | 
 | workspace: |   | SET | 
 | write format: |   | Attributes | 
 
  | 
| Y |  |  | 
 | year-day: |   | Date Construction | 
 | years: |   | Date Extraction | 
 | your rights and obligations: |   | License | 
 
  |