→ 7 QC tools for process improvement are systematic and scientific methods for Problem Solving and they are used for Product and Process Improvement.

→ 7 QC tools is a systematic and scientific method for the

__Problem Solving Technique__.
→ It is used to solve 90% of shop floor problems very easily and it improves our workplace.

### From Where did the 7 QC Tools come?

→ Primarily Kaoru Ishikawa introduced the 7 QC Tools.

→ Ishikawa has known for the “Democratizing (Visual Aids/Symbols) Statistics”.

→ Good visual aids make statistical and quality control more comprehensive.

→ Dr. Kaoru Ishikawa was a professor at the engineering college at Tokyo University.

### Why we use The 7 QC Tools for Process Improvement?

→ The 7 QC tools for Process Improvement is a set of graphical techniques identified as being most helpful in troubleshooting issues related to quality.

→ It is a fundamental concept to improve the process and

__Product Quality__.
→ It is used to examine the production sequence, identify the key issues, control fluctuations of product quality, and give solutions to avoid future defects.

→ This facilitates the organization to resolve the basic problems.

→ These 7 QC tools are easy to understand and implement and they do not need complex analytical/ statistical competence, hence it is simple yet powerful.

### What is the use of 7 QC Tools?

➝ It encourages the way of problem-solving and improvement.

➝ They are very simple to use but it is very powerful.

➝ It is a scientific approach for problem-solving.

➝ We can get an 80% result by applying 20% of the effort.

➝ Each tool has its own specialty for problem solving and analysis.

➝ It is very easy to understand, communicate, and use by the shop floor operator.

## The 7 QC Tools:

- Flow Charts
- Cause and Effect Diagram (Fishbone or Ishikawa)
- Checksheet
- Histogram
- Pareto Chart
- Scatter Diagram
- Control Chart

###
**👉 **__Download 7 QC Tools PDF file__

__Download 7 QC Tools PDF file__

###
[1] __Flow Charts__:

→“It is a diagrammatic representation that illustrates the sequence of operation to be performed to get the desired result.”

→ It is a visual representation tool for a sequence of operation, therefore, we can easily illustrate the Internal and external operational boundaries.

###
[2] __Cause and Effect Diagram__:

→ “It is a meaningful relationship between an effect and its causes."

→ It guides concrete action and tracks the potential causes during an investigation of the effort to determine whether the item significantly contributes to the problem or not.

→ The cause and effect tool is a very popular

__Root Cause Analysis Tool__.
→ Fishbone diagram can identify all possible cause(s) for the problem.

→ In this tool, we can find possible causes with the help of 6M concepts such as man, machine, material, method, measurement, and mother nature.

###
[3] __Check Sheet__:

→ "Check Sheet is a structured, prepared form for collecting and analyzing data."

→ Data collected by the check sheet is used as an input of the other tool and data can be collected based on asking a question by what, when, where, how.

→ The purpose of a checklist is to summarize the data and a tally count of event occurrences.

→ A check sheet counts the number of occurrences of an event, such as defects or non-conformance.

→ Hence the Check Sheet is also called a "tally sheet ".

→ In many cases, a checklist will summarize countable data related to certain types of defects and will provide a rough graphical representation of wherein a part of the process, defects occurred.

###
[4] __Histogram__:

→ “Histogram is a type of bar graph representing the frequency distribution of the data from a process.”

→ Karl Pearson introduced Histogram and it is a bar graph representing the frequency distribution on its every bar.

→ Histograms are used to show the output of our process matches the customer's requirements or not?

→ Also, we can take the decision based on the data patterns plotted on the graph either the process is centric or it is widespread.

→ "Is the process capable of meeting customer requirements?“

→ The histogram is the best Frequency distribution tool.

→ A histogram is a pictorial representation of a set of data.

#### ➨ Types of Histogram:

→ Normal Distribution

→ Skewed Distribution

→ Double-Peaked or Bimodal

→ Multipeaked or Multimodal

→ Edge Peaked Histogram

→ Truncated or Heart cut Histogram

###
[5] __Pareto Chart__:

→ "It is a bar graph arranged in descending order of height from left to right”

→ It is a graph that shows the order of the largest number of occurrences by item or by classes and the cumulative sum total.

→ The Pareto analysis helps us to prioritize where we can get more benefits by applying fewer efforts.

→ It is also very popular as a prioritization tool.

→ It communicates the principle of 80:20.

→ The Pareto Principle gives us information about Vital few from Trivial many, Hence, It is "Vital few from Trivial many".

→ It states that 80% of an effect comes from 20% of the causes.

###
[6] __Scatter Diagram__:

→ “Scatter Diagram is used to study and identify the possible relationship between two variables”.

→ It is the best validation tool.

#### ➨ Different names of the Scatter Diagram:

→ Scatter Plot

→ Scatter Graph

→ Correlation Graph

→ Scatter Gram

#### ➨ Different correlation between two variables in the Scatter Plot:

→ Strong Positive

→ Moderate Positive correlation

→ Weak Positive correlation

→ Strong Negative correlation

→ Moderate Negative correlation

→ Weak Negative correlation

→ Random Pattern (No correlation)

###
[7] __Control Chart__:

→ “It is used for studying the process variation over time."

→ It is a plot of a process characteristic, usually through time with statistically determined limits.

→ When used for monitoring, it helps the user to determine the appropriate type of action to take on the process depending on a degree of variation.

→ Comparing above all tool this is the best forecasting tool.

👉 Also Read:

**Control Chart Explained with Case Study**
👉 Also Read:

2.

__Cause & Effect Diagram__(Fishbone or Ishikawa)
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very good presentation skill and to the point explaination

ردحذفThanks for your feedback and kind comment!!!

حذفHow to download???

ردحذفYou can check the individual articles!!!

حذفGood

ردحذفThanks!!!

حذفBest in short...

ردحذفGreat work Nikunj

Thank you very much for your kind comment!!!

حذفSimply wonderful. Thanks very much!

ردحذفThank you very much for your kind comment!!!

حذفthis is a great initiative , well done

ردحذفThank you for your kind words!!!

حذفThanks and happy learning!!!

حذفNice teaching

ردحذفThank you and Happy Learning!!!

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