Quality Tools

Quality Tools

1. diagram causes effect

   • 5 M
     • Machine
     • workforce
     • Method
     • Materials
     • medium (work environment)
   • Determine the possible causes of a problem
   • Group these causes into different categories or factors
   • Guide subsequent corrective actions towards identified causes
   • Provide a common level of understanding and Reflect the dispersion of team knowledge

2. Inspeccion Forms

   • Collection and recording of information
   • observe trends and dispersions
   • requires a previous statistical analysis
   • real-time data collection
   • The data to be collected can be quantitative or qualitative

3. Control charts

   • successive values ​​of the quality characteristic being studied are recorded.
   • represents the historical average, and two control limits
   • evaluate the stability of a process.
   • It determines when a process needs to be adjusted and when it should be left as it stands.
   • Confirms the improvement of a process

4. Histogram

   • graphical representation of statistics of different types.
   • allows to observe around what value the measurements are grouped and what the dispersion around this value
   • it establishes in a visual, orderly and easily understandable way all the numerical data
   • it is always a representation in bars

5. Pareto graph

   • the data are sorted by their frequency from highest to lowest
   • also known as rule 80 -20
   • It is applied very successfully in many areas, including quality control
   • When there is a need to draw attention to problems or causes in a systematic way.
   • identifies opportunities for improvement
   • evaluate the results of changes made to a process (before and after)

6. Dispersion diagram

   • graphically represents the relationship between two variables
   • observes the dependence or influence that one variable has on the other
   • to graphically display its possible correlation
   • the object is to find the relations of the causes that produce an effect.
   • Quickly view anomalous changes