Statistical process control (SPC) or statistical quality control (SQC) is the application of statistical techniques to measure, monitor and control the quality of a process.

• Purpose
  Statistical process control or statistical quality control is the application of statistical techniques to measure, monitor and control the quality of a process. This app provides the related tools to help user on improving quality and predicting the behaviour of the process.
  Tools include for helping user on the purpose:

  • Identify Data Distribution

  • Capability Analysis

  • Process Overview

  • Data Transformation

  • Control Charts

    • Variables Charts for Subgroups

    • Variables Charts for Individuals

    • Attributes Charts

    • Time-Weighted Charts

• Installation
  Download the file "Statistical Process Control.opx", and then drag-and-drop onto the Origin workspace. An icon will appear in the Apps gallery window.

• Operation

  1. Import desired data into a worksheet. 

  2. With worksheet active, click the icon in the Apps Gallery window.

  3. In the pop up dialog, clicking the corresponding tab for the tools you want to use.

  4. Under the selected tab, click the big icon button to start the specific tool for the puspose.

  5. Another dialog will open for you to change the settings

  6. Click OK button and get the results.

• Dialog Settings and Algorithms

  Please refer to this page for the details.

v2.41, 11/21/2025, Fix Control Charts Omit Subgroups bug
v2.37, 11/17/2025, Update localization
v2.36, 10/21/2025, Support multiple variables for capability analysis and Multivariate Charts
v2.35, 10/11/2025, Fix bugs for showing PPM in report and CI of between/within capability analysis
v2.31, 8/8/2025, Fix bugs
v2.2, 7/22/2025, Update localization
v2.17, 7/9/2025, Improve tooltip for Zone chart
v2.1, 6/11/2025, Update report sheet
v2.03, 4/25/2025, Update keywords
v2.02, 4/9/2025, Update localization
v2.01, 4/2/2025, Report sheet is provided for capability analysis
v2, 3/26/2025, Support time stamp in control charts
v1.96, 3/19/2025, Update graph long name as page title name
v1.95, 3/18/2025, Check input non-negative integer for Binomial/Poisson capability analysis
v1.94, 3/17/2025, Fix the display for LCL and UCL in Binomial/Poisson capability analysis
v1.93, 3/13/2025, Update templates for capability analysis
v1.92, 1/20/2025, Update localization
v1.91, 1/7/2025, Use new substitution for labels of UCL and LCL
v1.9, 12/19/2024, Fix tick labels issue for poisson and process overview
v1.8, 11/26/2024, Fix bug for graph title update issue in Identify Data Distribution
v1.7, 9/5/2024, Fix linked layer resizing issue, disable result table's editing
v1.6, 6/27/2024, Support for open with specified tab
v1.5, 6/24/2024, Fix bug of stage display
v1.4, 4/18/2024, Put subgroup info in plot data of control charts and show in the data tips
v1.3, 3/20/2024, Fix bug of graph messed up for multiple inputs
v1.2, 1/26/2024, Fix bug of data across columns issue for Box-Cox and Yeo-Johnson transformation
v1.1, 12/5/2023, Fix tick label issue,subgroup size checking issue,title position issue