Course Number 200 Process Quality Control - Average and Standard Deviation 6 hours of instruction  Format: Text for Classroom & Self-Study Instruction Price: $25.50

After completion the student should be able to:

1. calculate the average and standard deviation of a set of data;

2. understand that the average of a set of data is the level or center line of the data;

3. under-stand that the standard deviation is the scatter or variability of the data around the average;

4. to have an understanding of +1, +2 and +3 standard deviation bands;

5. master two methods of calculating standard deviation, one better for manual calculation and the second easier for use with a calculator;

6. calculate the expected percentage of data within specification limits;

7. calculate the change in the percentage of data expected within specification limits when the process average shifts off aim and

8. understand the effect of reducing process variability on product quality.

Prerequisites - Ability to add, multiply and divide positive and negative whole numbers and decimal numbers. Reading and understanding bar graphs. The ability to take a square root manually or the ability to use a calculator to find a square root.

Related Instruction:

Course Number 29 - Plant Mathematics - Whole Numbers

Course Number 60 - Plant Mathematics - Decimals & Percents

Course Number 82 - Plant Mathematics - Positive & Negative Numbers

Course Number 78 - Reading & Preparing Simple Graphs

Course Number 201 - Process Quality Control - Basic Quality Control Charts

Course Number 202 - Process Quality Control - Cusum Quality Control Charts