# List of Statistical Procedures

This page presents a list of the statistical, graphics, and data analysis procedures available in NCSS. For a more in-depth look at the features of a procedure, please download the free trial of NCSS. Click to see some additional details about regression analysiscomparing means, crosstabs and proportions, mass appraisal, curve fitting, time series and forecasting, clustering, quality control, or survival analysis in NCSS. You can also see a complete list of all the statistical data analysis tools, procedures, tests, graphics and calculations available in NCSS Statistical Software.

## Analysis Procedures

### Analysis of Variance (ANOVA)

• One-Way Analysis of Variance
• Box-Cox Transformation for Two or More Groups (T-Test and One-Way ANOVA)
• Balanced Design Analysis of Variance
• General Linear Models (GLM)
• Repeated Measures Analysis of Variance
• Multivariate Analysis of Variance (MANOVA)
• Analysis of Two-Level Designs
• Nondetects-Data Group Comparison
• Area Under Curve

### Appraisal

• Appraisal Ratio Studies
• Hybrid Appraisal Models
• Comparables Appraisal
• Descriptive Statistics
• Descriptive Statistics - Summary Tables
• Descriptive Statistics - Summary Lists
• Linear Regression and Correlation
• Multiple Regression for Appraisal
• Multiple Regression - Basic
• Multiple Regression
• Multiple Regression with Serial Correlation
• Nonlinear Regression

### Cluster Analysis

• Fuzzy Clustering
• Hierarchical Clustering / Dendrograms
• K-Means Clustering
• Medoid Partitioning
• Regression Clustering

### Correlation

• Correlation (Pearson, Spearman, Kendall's Tau)
• Correlation and Linear Regression
• Correlation Matrix
• Point-Biserial and Biserial Correlations
• Box-Cox Transformation for Simple Linear Regression
• Canonical Correlation
• Cronbach's Alpha in Item Analysis
• Bland-Altman Plot and Analysis
• Lin's Concordance Correlation Coefficient
• Circular Data Correlation

### Curve Fitting

• Curve Fitting - General
• Fractional Polynomial Regression
• Michaelis-Menten Equation
• Ratio of Polynomials Fit - One Variable
• Ratio of Polynomials Search - One Variable
• Sum of Functions Models
• Reference Intervals - Age-Specific
• Nonlinear Regression
• Ratio of Polynomials Fit - Many Variables
• Ratio of Polynomials Search - Many Variables
• Function Plots
• Scatter Plot Matrix for Curve Fitting

### Descriptive Statistics

• Descriptive Statistics
• Descriptive Statistics - Summary Tables
• Descriptive Statistics - Summary Lists
• Two-Way Contingency Tables (Crosstabs / Chi-Square Test)
• Frequency Tables
• Box-Cox Transformation
• Data Screening
• Data Simulation
• Grubbs' Outlier Test
• Normality Tests
• Area Under Curve
• Circular Data Analysis
• Tolerance Intervals

### Design of Experiments

• Randomization Lists
• Balanced Incomplete Block Designs
• Fractional Factorial Designs
• Latin Square Designs
• Response Surface Designs
• Screening Designs
• Taguchi Designs
• Two-Level Designs
• Design Generator
• D-Optimal Designs
• Analysis of Two-Level Designs
• Response Surface Regression

### Diagnostic Tests

• Binary Diagnostic Tests - Single Sample
• Binary Diagnostic Tests - Clustered Samples
• Binary Diagnostic Tests - Two Independent Samples
• Binary Diagnostic Tests - Paired Samples
• One ROC Curve and Cutoff Analysis
• Comparing Two ROC Curves - Paired Design
• Comparing Two ROC Curves - Independent Groups Design

### Distribution Fitting

• Beta Distribution Fitting
• Distribution (Weibull) Fitting
• Gamma Distribution Fitting
• Grubbs' Outlier Test
• Normality Tests
• Normal Probability Plots
• Weibull Probability Plots
• Chi-Square Probability Plots
• Exponential Probability Plots
• Gamma Probability Plots
• Half-Normal Probability Plots
• Log-Normal Probability Plots
• Uniform Probability Plots
• Probability Plot Comparison

### Forecasting

• ARIMA (Box-Jenkins)
• Automatic ARMA
• Theoretical ARMA
• Autocorrelations
• Cross-Correlations
• Spectral Analysis
• Decomposition Forecasting
• Exponential Smoothing - Horizontal
• Exponential Smoothing - Trend
• Exponential Smoothing - Trend / Seasonal
• Harmonic Regression
• Analysis of Runs

### Item Analysis

• Item Analysis
• Item Response Analysis

### Meta-Analysis

• Meta-Analysis of Means
• Meta-Analysis of Proportions
• Meta-Analysis of Correlated Proportions
• Meta-Analysis of Hazard Ratios

### Method Comparison

• Bland-Altman Plot and Analysis
• Deming Regression
• Passing-Bablok Regression for Method Comparison
• Lin's Concordance Correlation Coefficient
• Grubbs' Outlier Test
• Normality Tests

### Mixed Models

• Mixed Models - General
• Mixed Models - No Repeated Measures
• Mixed Models - Repeated Measures
• Mixed Models - Random Coefficients

### Multivariate Analysis

• Factor Analysis
• Principal Components Analysis
• Canonical Correlation
• Equality of Covariance
• Discriminant Analysis
• Hotelling's One-Sample T2
• Hotelling's Two-Sample T2
• Multivariate Analysis of Variance (MANOVA)
• Correspondence Analysis
• Loglinear Models
• Multidimensional Scaling

### Nondetects Data Analysis

• Nondetects-Data Group Comparison
• Nondetects Data Regression

### Nonparametric

#### Cochran's Q Test

• Cochran's Q Test

#### Conover Equal Variance Test

• One-Way Analysis of Variance

#### Cumulative Incidence Curves

• Cumulative Incidence

#### Dunn's Test

• One-Way Analysis of Variance

#### Dwass-Steel-Critchlow-Fligner Test

• One-Way Analysis of Variance

#### Friedman's Rank Test

• Balanced Design Analysis of Variance

#### Kaplan-Meier Curves

• Kaplan-Meier Curves (Logrank Tests)

#### Kendall's Tau Correlation

• Correlation
• Two-Way Contingency Tables (Crosstabs / Chi-Square Test)

#### Kolmogorov-Smirnov Test

• Two-Sample T-Test
• Descriptive Statistics
• Normality Tests
• Tolerance Intervals

#### Kruskal-Wallis Test

• One-Way Analysis of Variance

#### Logrank Test

• Kaplan-Meier Curves (Logrank Tests)

#### Mann-Whitney U or Wilcoxon Rank-Sum Test

• Two-Sample T-Test
• Testing Non-Inferiority with Two Independent Samples
• Testing Equivalence with Two Independent Samples

#### McNemar Test

• Two Correlated Proportions (McNemar Test)
• Two Correlated Proportions – Equivalence Tests
• Two-Way Contingency Tables (Crosstabs / Chi-Square Test)
• Cochran’s Q Test (as pairwise multiple comparison tests)

#### Nondetects-Data Group Comparison

• Nondetects-Data Group Comparison

#### Randomization Tests

• One-Sample T-Test
• Paired T-Test
• Two-Sample T-Test
• Linear Regression and Correlation
• Curve Fitting - General
• Michaelis-Menten Equation
• Hotelling's One-Sample T2
• Hotelling's Two-Sample T2
• Kaplan-Meier Curves (Logrank Tests)

#### ROC Curves

• One ROC Curve and Cutoff Analysis
• Comparing Two ROC Curves – Paired Design
• Comparing Two ROC Curves – Independent Groups Design

#### Runs Tests (e.g. Wald-Wolfowitz Runs Test)

• Analysis of Runs

#### Sign or Quantile Test

• One-Sample T-Test
• Paired T-Test

#### Spearman-Rank Correlation

• Correlation
• Correlation Matrix
• Linear Regression and Correlation

#### Wilcoxon Signed-Rank Test

• One-Sample T-Test
• Paired T-Test

### Operations Research

• Linear Programming with Bounds
• Linear Programming with Tableau
• Mixed Integer Programming
• Assignment
• Maximum Flow
• Minimum Cost Capacitated Flow
• Minimum Spanning Tree
• Shortest Route
• Transportation
• Transshipment

### Proportions

• One Proportion
• Two Proportions
• Two Proportions - Non-Inferiority Tests
• Two Proportions - Superiority Tests
• Two Proportions - Equivalence Tests
• Two Proportions - Two-Sided Tests vs. a Margin
• Two Correlated Proportions (McNemar Test)
• Two Correlated Proportions - Non-Inferiority Tests
• Two Correlated Proportions - Superiority Tests
• Two Correlated Proportions - Equivalence Tests
• Two-Way Contingency Tables (Crosstabs / Chi-Square Test)
• Frequency Tables
• Cochran's Q Test
• Loglinear Models
• Mantel-Haenszel Test

### Quality Control

• X-bar and R Charts
• X-bar and s Charts
• X-bar Charts
• R Charts
• s Charts
• CUSUM Charts
• EWMA Charts
• Moving Average Charts
• Individuals and Moving Range Charts
• Levey-Jennings Charts
• P Charts
• NP Charts
• C Charts
• U Charts
• Analysis of Runs
• Capability Analysis
• Lag Plots
• Pareto Charts
• R & R Study
• Tolerance Intervals
• Acceptance Sampling for Attributes
• Operating Characteristic Curves for Acceptance Sampling for Attributes

### Reference Intervals

• Reference Intervals
• Reference Intervals - Age-Specific
• Robust Linear Regression (Passing-Bablok Median-Slope)
• Tolerance Intervals

### Regression

#### Simple Linear Regression

• Linear Regression and Correlation
• Box-Cox Transformation for Simple Linear Regression
• Robust Linear Regression (Passing-Bablok Median-Slope)

#### Multiple Regression

• Multiple Regression
• Multiple Regression - Basic
• Principal Components Regression
• Nondetects Data Regression
• Response Surface Regression
• Ridge Regression
• Robust Regression
• Multiple Regression for Appraisal
• Multiple Regression with Serial Correlation

#### Logistic Regression

• Logistic Regression
• Conditional Logistic Regression
• Discriminant Analysis
• Probit Analysis

#### Cox Regression

• Cox Regression
• Parametric Survival (Weibull) Regression
• Probit Analysis

#### Count Data

• Poisson Regression
• Zero-Inflated Poisson Regression
• Negative Binomial Regression
• Zero-Inflated Negative Binomial Regression
• Geometric Regression

#### Method Comparison

• Deming Regression
• Passing-Bablok Regression for Method Comparison

#### Nondetects-Data Regression

• Nondetects Data Regression

#### Nonlinear Regression

• Nonlinear Regression
• Curve Fitting - General
• Michaelis-Menten Equation
• Sum of Functions Models
• Fractional Polynomial Regression
• Ratio of Polynomials Fit - One Variable
• Ratio of Polynomials Search - One Variable
• Harmonic Regression
• Ratio of Polynomials Fit - Many Variables
• Ratio of Polynomials Search - Many Variables

#### Survival Data

• Cox Regression
• Parametric Survival (Weibull) Regression
• Probit Analysis

#### Subset Selection

• All Possible Regressions
• Stepwise Regression
• Subset Selection in Multiple Regression
• Subset Selection in Multivariate Y Multiple Regression
• Conditional Logistic Regression
• Cox Regression
• Discriminant Analysis
• Geometric Regression
• Logistic Regression
• Negative Binomial Regression
• Poisson Regression

#### Time Series

• Multiple Regression with Serial Correlation
• Harmonic Regression

#### Two-Stage Least Squares

• Two-Stage Least Squares

### Reliability

• Cumulative Incidence
• Kaplan-Meier Curves (Logrank Tests)
• Life-Table Analysis
• Cox Regression
• Parametric Survival (Weibull) Regression
• Beta Distribution Fitting
• Distribution (Weibull) Fitting
• Gamma Distribution Fitting
• Mantel-Haenszel Test
• Probit Analysis
• Tolerance Intervals
• Survival Parameter Conversion Tool
• Time Calculator

### ROC Curves

• One ROC Curve and Cutoff Analysis
• Comparing Two ROC Curves - Paired Design
• Comparing Two ROC Curves - Independent Groups Design

### Survey Data

• Two-Way Contingency Tables (Crosstabs / Chi-Square Test)
• Frequency Tables
• Cochran's Q Test
• Descriptive Statistics - Summary Tables
• Descriptive Statistics - Summary Lists
• Loglinear Models
• Item Analysis
• Data Screening

### Survival Analysis

• Cumulative Incidence
• Kaplan-Meier Curves (Logrank Tests)
• Life-Table Analysis
• Cox Regression
• Parametric Survival (Weibull) Regression
• Beta Distribution Fitting
• Distribution (Weibull) Fitting
• Gamma Distribution Fitting
• Mantel-Haenszel Test
• Probit Analysis
• Tolerance Intervals
• Survival Parameter Conversion Tool
• Time Calculator

### Time Series

• ARIMA (Box-Jenkins)
• Automatic ARMA
• Theoretical ARMA
• Autocorrelations
• Cross-Correlations
• Spectral Analysis
• Decomposition Forecasting
• Exponential Smoothing - Horizontal
• Exponential Smoothing - Trend
• Exponential Smoothing - Trend / Seasonal
• Harmonic Regression
• Analysis of Runs

### T-Tests

• One-Sample T-Test
• Paired T-Test
• Paired T-Test for Non-Inferiority
• Paired T-Test for Equivalence
• Two-Sample T-Test
• Two-Sample T-Test from Means and SD's
• Testing Non-Inferiority with Two Independent Samples
• Testing Equivalence with Two Independent Samples
• Box-Cox Transformation for Two or More Groups (T-Test and One-Way ANOVA)
• Bland-Altman Plot and Analysis
• Hotelling's One-Sample T2
• Hotelling's Two-Sample T2
• Analysis of Two-Level Designs
• Cross-Over Analysis Using T-Tests

### Two-Way Tables

• Two-Way Contingency Tables (Crosstabs / Chi-Square Test)
• Frequency Tables
• Cochran's Q Test
• Loglinear Models
• Mantel-Haenszel Test

## Graphics Procedures

Click here to see additional details and samples of the graphs and plots that are available in NCSS.

### Bar Charts

• Bar Charts
• Bar Charts (2 Factors)
• 3D Bar Charts
• 3D Bar Charts (2 Factors)
• Pareto Charts

### Bland-Altman Plot

• Bland-Altman Plot and Analysis

### Box Plots

• Box Plots
• Box Plots (2 Factors)
• Combo Charts
• Combo Charts (2 Factors)

### Circular Data Plots

#### Circular Histograms

• Circular Data Analysis

#### Rose Plots

• Circular Data Analysis

• Pie Charts

### Contour Plots

• Contour Plots
• 3D Surface Plots
• Response Surface Regression

### Curve Fitting

• Curve Fitting - General
• Michaelis-Menten Equation
• Scatter Plot Matrix for Curve Fitting
• Function Plots

### Dendrograms

• Hierarchical Clustering / Dendrograms

### Density Plots

• Density Plots
• Density Plots (2 Factors)
• Combo Charts
• Combo Charts (2 Factors)

### Dot Plots

• Dot Plots
• Dot Plots (2 Factors)
• Combo Charts
• Combo Charts (2 Factors)

### Error-Bar Charts

• Error-Bar Charts
• Error-Bar Charts (2 Factors)
• Error-Bar Charts from Summary Data
• Error-Bar Charts from Summary Data (2 Factors)
• Scatter Plots with Error Bars
• Scatter Plots with Error Bars from Summary Data
• Combo Charts
• Combo Charts (2 Factors)

### Forecasting

#### Autocorrelation Plots

• Autocorrelations
• ARIMA (Box-Jenkins)
• Automatic ARMA
• Theoretical ARMA

#### Cross-Correlation Plots

• Cross-Correlations

#### Data Plots

• Autocorrelations
• Cross-Correlations
• Spectral Analysis
• Theoretical ARMA

#### Decomposition Ratio Plots

• Decomposition Forecasting

#### Forecast Plots

• ARIMA (Box-Jenkins)
• Automatic ARMA
• Decomposition Forecasting
• Exponential Smoothing - Horizontal
• Exponential Smoothing - Trend
• Exponential Smoothing - Trend / Seasonal

• Lag Plots

#### Partial Autocorrelation Plots

• Autocorrelations

#### Periodograms

• Spectral Analysis

#### Runs Charts

• Analysis of Runs

#### Serial Correlation Plots

• Linear Regression and Correlation
• Multiple Regression
• Multiple Regression - Basic
• Multiple Regression with Serial Correlation
• Robust Regression
• Subset Selection in Multiple Regression

#### Spectrum Plots

• Spectral Analysis
• Theoretical ARMA

### Forest Plots

• Meta-Analysis of Correlated Proportions
• Meta-Analysis of Hazard Ratios
• Meta-Analysis of Means
• Meta-Analysis of Proportions

### Function Plots

• Function Plots

### Histograms

• Histograms
• Histograms - Comparative
• Histograms - Comparative (2 Factors)
• Combo Charts
• Combo Charts (2 Factors)
• Circular Data Analysis
• Capability Analysis

### Kaplan-Meier Curves (Survival)

• Kaplan-Meier Curves (Logrank Tests)

### Line Charts

• Line Charts
• Line Charts (2 Factors)
• 3D Line Charts
• 3D Line Charts (2 Factors)

• Mosaic Plots

### Percentile Plots

• Percentile Plots
• Percentile Plots (2 Factors)
• Combo Charts
• Combo Charts (2 Factors)

• Pie Charts

### Probability Plots

• Normal Probability Plots
• Weibull Probability Plots
• Chi-Square Probability Plots
• Exponential Probability Plots
• Gamma Probability Plots
• Half-Normal Probability Plots
• Log-Normal Probability Plots
• Uniform Probability Plots
• Probability Plot Comparison

### Quality Control Charts

• X-bar and R Charts
• X-bar and s Charts
• X-bar Charts
• R Charts
• s Charts
• CUSUM Charts
• Moving Average Charts
• EWMA Charts
• Individuals and Moving Range Charts
• Levey-Jennings Charts
• P Charts
• NP Charts
• C Charts
• U Charts
• Capability Analysis
• Lag Plots
• Pareto Charts
• Analysis of Runs

### ROC Curves

• One ROC Curve and Cutoff Analysis
• Comparing Two ROC Curves - Paired Design
• Comparing Two ROC Curves - Independent Groups Design

### Scatter Plots

• Scatter Plots
• 3D Scatter Plots
• Scatter Plots with Error Bars
• Scatter Plots with Error Bars from Summary Data
• Scatter Plot Matrix
• Scatter Plot Matrix for Curve Fitting
• Lag Plots

### Stem-and-Leaf Plots

• Stem-and-Leaf Plots
• Back-to-Back Stem-and-Leaf Plots

### Surface Plots

• 3D Surface Plots
• Contour Plots
• Response Surface Regression

### Time Series

#### Autocorrelation Plots

• Autocorrelations
• ARIMA (Box-Jenkins)
• Automatic ARMA
• Theoretical ARMA

#### Cross-Correlation Plots

• Cross-Correlations

#### Data Plots

• Autocorrelations
• Cross-Correlations
• Spectral Analysis
• Theoretical ARMA

#### Decomposition Ratio Plots

• Decomposition Forecasting

#### Forecast Plots

• ARIMA (Box-Jenkins)
• Automatic ARMA
• Decomposition Forecasting
• Exponential Smoothing - Horizontal
• Exponential Smoothing - Trend
• Exponential Smoothing - Trend / Seasonal

• Lag Plots

#### Partial Autocorrelation Plots

• Autocorrelations

#### Periodograms

• Spectral Analysis

#### Runs Charts

• Analysis of Runs

#### Serial Correlation Plots

• Linear Regression and Correlation
• Multiple Regression
• Multiple Regression - Basic
• Multiple Regression with Serial Correlation
• Robust Regression
• Subset Selection in Multiple Regression

#### Spectrum Plots

• Spectral Analysis
• Theoretical ARMA

### 3D Plots

• 3D Scatter Plots
• 3D Surface Plots
• 3D Bar Charts
• 3D Bar Charts (2 Factors)
• 3D Line Charts
• 3D Line Charts (2 Factors)

## Data Operations and Procedures

### Operations

• Data Window
• Importing Data
• Exporting Data
• Filters
• Transformations
• Stacking Data
• Unstacking Data
• Creating Contrast Variables

### Procedures

• Box-Cox Transformation
• Box-Cox Transformation for Two or More Groups (T-Test and One-Way ANOVA)
• Box-Cox Transformation for Simple Linear Regression
• Data List
• Data Screening
• Descriptive Statistics - Summary Lists
• Data Simulation
• Merging Two Datasets
• Data Matching - Greedy
• Data Matching - Optimal
• Data Stratification
• Time Calculator

## Tools

### Calculators

• Probability Calculator
• Chi-Square Effect Size Calculator
• Odds Ratio and Proportions Calculator
• Standard Deviation Calculator
• Survival Parameter Conversion Tool

### Macros

• Macros

"I have been using NCSS for almost 20 years. I absolutely love it. It does everything [I need that] SPSS or SAS does, is more reasonably priced and user friendly and has wonderful customer support. If you have a problem, when you call a real person (who created the software) gently talks you through it. It is a great product and a great company."

Cheryl L. Meyer, PhD, Wright State University

I am a very satisfied user of NCSS. For years I used SPSS in my consulting work, but the cost got to be exorbitant. When I started using NCSS, I found it easy and intuitive to use and extremely accurate in its results. It is not only my statistical analysis program of choice but I have recommended it to many of my clients as well. When I've had questions and called NCSS, I have always gotten expert help and advice and never had a problem go unsolved. Keep up the good work.