What's new in versions 28 and 28.0.1
IBM SPSS Statistics 28.0.1
 Analyze procedures

 Kernel Ridge Regression
 The new extensionbased procedure uses the Python sklearn.kernel_ridge.KernelRidge class to estimate a kernel ridge regression of a dependent variable on one or more independent variables. The independent variables include model hyperparameters, or a selection of hyperparameter values, over a specified grid of values. Cross validation is achieved by using the sklearn.model_selection.GridSearchCV class.
 Linear Mixed Models
 A new output table for the procedure provides the marginal and conditional pseudoR^{2} measures. The table displays only in instances where appropriate.
 Power Analysis procedures
 The new precision feature computes the sample sizes that are required to
estimate the population parameter with precision that is determined by userspecified confidence
interval halfwidths. The expected result produces the minimum sample size to ensure that the actual
confidence interval halfwidths do not exceed the desired values.Note: The new feature is available for all Power Analysis procedures except Univariate Linear Regression.
 Command syntax

 OUTPUT CREATE
 The new command provides options for creating custom tables, charts, and other output items from userentered JSON or from an external *.json file. For more information, see OUTPUT CREATE.
 POWER ONEWAY ANOVA
 The CONTRAST subcommand's new HALFWIDTH keyword estimates the sample size based on specified confidence interval halfwidths. For more information, see CONTRAST Subcommand (POWER ONEWAY ANOVA command).
 POWER MEANS INDEPENDENT
 The new PRECISION subcommand estimates the sample size based on specified confidence interval halfwidths. For more information, see PRECISION Subcommand (POWER MEANS INDEPENDENT command).
 POWER MEANS ONESAMPLE
 The new PRECISION subcommand estimates the sample size based on specified confidence interval halfwidths. For more information, see PRECISION Subcommand (POWER MEANS ONESAMPLE command).
 POWER MEANS RELATED
 The new PRECISION subcommand estimates the sample size based on specified confidence interval halfwidths. For more information, see PRECISION Subcommand (POWER MEANS RELATED command).
 POWER PARTIALCORR
 The new PRECISION subcommand estimates the sample size based on specified confidence interval halfwidths. For more information, see PRECISION Subcommand (POWER PARTIALCORR command).
 POWER PEARSON ONESAMPLE
 The new PRECISION subcommand estimates the sample size based on specified confidence interval halfwidths. For more information, see PRECISION Subcommand (POWER PEARSON ONESAMPLE command).
 POWER PROPORTIONS INDEPENDENT
 The new PRECISION subcommand estimates the sample size based on specified confidence interval halfwidths. For more information, see PRECISION Subcommand (POWER PROPORTIONS INDEPENDENT command).
 POWER PROPORTIONS ONESAMPLE
 The new PRECISION subcommand estimates the sample size based on specified confidence interval halfwidths. For more information, see PRECISION Subcommand (POWER PROPORTIONS ONESAMPLE command).
 POWER PROPORTIONS RELATED
 The new PRECISION subcommand estimates the sample size based on specified confidence interval halfwidths. For more information, see PRECISION Subcommand (POWER PROPORTIONS RELATED command).
 POWER SPEARMAN ONESAMPLE
 The new PRECISION subcommand estimates the sample size based on specified confidence interval halfwidths. For more information, see PRECISION Subcommand (POWER SPEARMAN ONESAMPLE command).
 POWER UNIVARIATE LINEAR
 The PARAMETERS subcommand's new ES keyword specifies the effect size value that is measured by f^{2}. For more information, see PARAMETERS Subcommand (POWER UNIVARIATE LINEAR command).
 SAVE DATA COLLECTION
 The command has been deprecated.
 Pivot table enhancements
 Most tables contain a mix of values, and applying a heat map to an entire table typically produces tables with wildly varying ranges. The pivot table editor now includes the menu option Color Scales, which provides heat map style settings that display selected table cells in varying colors based on the cell values. For more information, see Color scales.
 Workbook mode enhancements

 Context menu
 The rightclick context menu now provides options for cutting, copying, and pasting content, and for displaying the Style Output dialog, which specifies changes to make to selected output objects in the Workbook. For more information, see Style Output: Select.
 Syntax paragraph error pane
 Syntaxrelated error information now displays under the syntax paragraph.
 Manage license enhancement
 The SPSS® Statistics. If your administrator enabled commuter licenses, you can check out a commuter license to use the network license when you are not connected to the network. feature now provides the option of launching the Commuter Utility tool. Network licenses normally require that you are connected to the network to run
 Documentation
 The "Exporting to Data Collection" topic has been removed as IBM® SPSS Statistics no longer supports UNICOM Intelligence (formerly IBM SPSS Data Collection).
IBM SPSS Statistics 28
 Analyze procedures

 Meta Analysis
 Meta analysis is the analysis of the data obtained from a collection of studies that answer similar research questions. These studies are known as primary studies. Meta analysis uses statistical methods to produce an overall estimate of an effect, explore betweenstudy heterogeneity, and investigate the impact of publication bias or, more generally, smallstudy effects on the final results.
 General Linear Model (GLM) procedures
 The General Linear Model (GLM) procedure user interfaces now provide a
Compare simple main effects setting on their EM Means
dialogs. The setting is enabled whenever the target list contains one or more product or interaction
effects (for example,
A*B
,A*B*C
). The setting supports the specification of comparisons among simple main effects, which are main effects nested within the levels of other factors.  OneWay ANOVA
 The procedure now supports nonnumeric categorical variables.
 Power Analysis
 The new Grid Values dialog provides options for specifying a range of POWER values for the purpose of viewing projected sample sizes in a grid format for every specified POWER range value.
 Ratio Statistics

 PriceRelated Bias (PRB)
 The procedure now supports the PriceRelated Bias (PRB) dispersion method. PRB is an index of whether assessment to price ratios are systematically higher or lower for higherpriced properties. PRB regresses percentage differences in assessment ratios. The differences are drawn from the median ratio on the base 2 logarithms of value proxy measures. The proxy measures are calculated as the "averages of sales prices" and the "ratios of assessed values to the median ratio". The method also gives the percentage change in assessment ratios for a 100 percent change in value.
 Coefficient of Variation (COV)
 The new COV dispersion method includes the median and meancentered coefficients of variation and effectively replaces the Median Centered COV and Mean Centered COV dispersion methods. The mediancentered coefficient of variation is the result of expressing the root mean squares of deviation from the median as a percentage of the median. The meancentered coefficient of variation is the result of expressing the standard deviation as a percentage of the mean.
 Command syntax

 COXREG
 The CONTRAST subcommand's DEVIATION keyword now defaults the refcat to the first category. For more information, see CONTRAST Subcommand (COXREG command).
 LOGISTIC REGRESSION
 The CONTRAST subcommand's DEVIATION keyword now defaults the refcat to the first category. For more information, see CONTRAST Subcommand (LOGISTIC REGRESSION command).
 META BINARY command
 The new command represents the metaanalysis procedure for binary outcomes when the raw data are provided in the active dataset for the estimation of the effect size. For more information, see META BINARY.
 META ES BINARY command
 The new command represents the metaanalysis procedure for binary outcomes when the precalculated effect size data are provided in the active data set. For more information, see META ES BINARY.
 META CONTINUOUS command
 The new command represents the metaanalysis procedure for continuous outcomes when the raw data are provided in the active dataset for the estimation of the effect size. For more information, see META CONTINUOUS.
 META ES CONTINUOUS command
 The new command represents the metaanalysis procedure for continuous outcomes when the precalculated effect size data are provided in the active data set. For more information, see META ES CONTINUOUS.
 META REGRESSION command
 The new command represents the metaregression procedure. For more information, see META REGRESSION.
 RATIO STATISTICS
 COV and PRB keywords added to the OUTFILE subcommand.
 COV, PRB, and N keywords added to the PRINT subcommand.
 Relationship Maps
 Relationship maps are useful for determining how variables relate to each other by providing a visual representation of the connections and influences that each node and link has over each other. Relationship maps visually represent connections and influences through nodes and links. Nodes represent variables and variable categories; links represent the strength of influence between nodes. Larger nodes and thicker link lines represent stronger connections and influence. Smaller nodes and thinner link lines represent weaker connections and influence.
 R and Essentials for R
 R 4.0.x and IBM SPSS Statistics Essentials for R are now installed with IBM SPSS Statistics. The R environment settings are defined in .
 Python 3 and R programmability
 Support for Python 3 and R has been enhanced by enabling an easily configurable virtual runtime environment.
 Installation and licensing
 The product installer has been updated to provide the option of registering
either the subscription or licensed version of IBM SPSS Statistics.
 Subscription
 Requires an IBMid to activate and install the subscriptionbased version of the software. You must purchase IBM SPSS Statistics Subscription in order to activate the product via the subscription method.
 Licensed
 Requires an authorized user license or concurrent user license to activate the software. You must purchase an onpremise license for IBM SPSS Statistics in order to activate the product via a user license or concurrent user license.
 Output enhancements

 Workbooks
 Viewing output in Workbook mode bridges the SPSS Statistics syntax editing ability with a notebook approach that provides an interactive method for running syntax and viewing the corresponding output. Workbook documents (*.spwb) consist of individual paragraphs. The paragraphs contain the output elements (syntax, tables, charts, and so on). Syntax paragraphs provide full syntax edit and run capabilities. Rich text paragraphs provide full richtext editing capabilities.
 Chart and table editor usability enhancements

 Pivot table editor
 The pivot table editor user interface now includes edit options slideout pane on the right side of the dialog. The pane provides options for handling rows and columns, specifying text attributes, defining border parameters, specifying cells formats, and defining footnotes and table comments.
 Installed extensions
 Additional commonly used extensions are now automatically installed with the product. The installed extensions can be identified by the plus symbol next to their menu entry (for example, ).
 Search enhancements
 The search feature has been updated to now provide results for procedures,
help topics, syntax reference, and case studies. The Search feature now searches all words/terms in
each user interface dialog and help topic.
Refer to the following introductory video for a brief overview on the search enhancements:
 Export output enhancements

 Word Document (*.docx)
 You can now export output to Microsoft Word (*.docx) format.
 Text  Plain (*txt), Text  UTF8 (*txt), and Text  UTF16 (*txt)
 The text export settings are now divided into three distinct options that provide different encoding methods.
 Excel output
 The Microsoft Excel export settings now provide options for creating both workbooks and worksheets.
 Print preview
 The provides a PDF formatted preview version of the output.
 Select Cases  hidden cases
 By default, unselected cases are now hidden in the Data Editor when a subset of cases is selected, and the unselected cases are not discarded. Hidden cases are not picked up when rows are copied from the Data Editor.
 Chart Builder usability enhancements
 The template controls in the Chart Appearance tab have been redesigned to streamline template selection options.
 Accessibility
 The user interface now supports high contrast mode, which adjusts the background and text colors to make the application easier to read.