Leading the application of basic statistical analysis

URN: SEMBIT426
Business Sectors (Suites): Business Improvement Techniques Suite 4
Developed by: Enginuity
Approved on: 2023

Overview

This standard covers the competences required for leading the application of basic statistical analysis, by consulting with the appropriate people and leading the gathering the relevant data for statistical analysis on a Six Sigma project.  You will need to lead the use the data gathered to produce descriptive statistics, which cover mean, median, mode, standard deviation, range and variance for the selected representative sample.  You will be expected to lead the recording of the statistics gathered, using a variety of techniques that could include bar charts, histograms, Pareto diagrams, stem and leaf diagrams, box plots and time series charts.  You will also be required to approve the production of an action plan as a result of the statistical and graphical analysis undertaken.

Your responsibilities will require you to comply with organisational policy and procedures for the activities undertaken, and to report any problems with the activities that you can not solve, or that are outside your responsibility, to the relevant authority.  You will need to ensure that all the necessary documentation and/or visual representations are completed accurately and legibly.  You will be expected to take full responsibility for your own actions within the activity, and for the quality and accuracy of the work that you produce.

Your underpinning knowledge will provide a good understanding of basic statistics, and will provide an informed approach to the analytical techniques and procedures used.  You will need to understand the principles and application of basic statistical analysis, in adequate depth to provide a sound basis for carrying out the activities to the required criteria.

Applying and advising on safe working practices will be a key issue throughout.


Performance criteria

You must be able to:

  1. work safely at all times, complying with health and safety and other relevant regulations, directives and guidelines
  2. consult with appropriate people and lead the gathering of the relevant data for statistical analysis
  3. direct the production of data gathering forms or charts to gather information to enable statistical and graphical analysis to take place
  4. lead the use of statistical and graphical analysis on a Six Sigma project
  5. lead the production of a normal distribution to assess a population from the representative sample
  6. interpret the statistical data collected, in order to validate and approve the pre-determined courses of action
  7. approve the production of an action plan as a result of the statistical and graphical analysis undertaken
  8. implement and monitor the progress of the action plan

Knowledge and Understanding

You need to know and understand:

  1. how to work safely at all times, complying with health and safety and other relevant regulations, directives and guidelines
  2. how to plan the resources and time needed to carry out the agreed activity
  3. the meaning of 'variation', how this can be detected with statistics, and how this variation can affect a process
  4. the number of data points needed to draw a statistically valid conclusion
  5. why we need to use basic statistics
  6. the meaning of the terms 'population' and 'sample' when applied to basic statistics
  7. distribution curves and the properties of a normal curve
  8. how to create and use charts and diagrams
  9. how to calculate mean, median, mode, standard deviation, range and variance
  10. how to interpret and analyse the collected data
  11. the difference between descriptive and inferential statistics
  12. the extent of your own authority within the project, and to whom you should report in the event of problems that you cannot resolve

Scope/range


Scope Performance

1.    Lead the activities within your area of responsibility to include all of the following:

    1. set out and communicate the purpose of the improvement activities
    2. involve the team in planning how the improvement activity will be achieved
    3. ensure each team member has individual objectives and understands how these objectives contribute to the overall improvement objective
    4. provide advice and support the team to achieve both team and individual improvement objectives
    5. motivate the team to present their own improvement ideas
    6. encourage the team and/or individuals to take the lead where appropriate
    7. agree the implementation of the improvement ideas
    8. negotiate any physical and/or financial resources required to implement the improvement activity (where appropriate)
    9. monitor the progress of improvement activities
    10. deal with any organisational problems identified during the improvement activity

 

2.    Lead the production of statistics of data, to include all of the following:

    1. mean
    2. median
    3. mode
    4. standard deviation
    5. range and variance

       

3.    Lead the recording of the collected data, utilising three of the following methods:

    1. bar charts
    2. histograms
    3. Pareto diagrams
    4. stem and leaf diagrams
    5. box plots
    6. time series charts
    7. other specific method



Scope Knowledge


Values


Behaviours


Skills


Glossary


Links To Other NOS


External Links


Version Number

3

Indicative Review Date

2028

Validity

Current

Status

Original

Originating Organisation

Enginuity

Original URN

SEMBIT426

Relevant Occupations

Associate Professionals and Technical Occupations, Business and Finance Associate Professionals, Business Management, Business, Administration and Law

SOC Code

2127

Keywords

Engineering; business; improvement; techniques; basic statistics; Six Sigma; data; Pareto diagrams; stem and leaf diagrams; box plots; time series charts