Statistical process control - mean and range charts, Operation Management

Assignment Help:

Statistical Process Control - Mean and Range Charts

1. SPC can be used as a means of preventing product non-conformance 

2. Causes of variability may be categorised as common causes and assignable causes 

3. Variables are features of a process output which can be measured on a continuous scale; attributes are features which do not lend themselves to measurement, but allow the output to be segregated into conforming and non-conforming items 

4. Variability can be assessed by analysing measurements to estimate the population mean and standard deviation 

5. Samples are used, to take advantage of the central tendency of sample means i.e. the means of samples cluster more closely around the population mean than do individual measurements 

6. Mean and range charts are used to monitor process variables 

7. Process capability is assessed by comparing the process variability with the product design tolerance band 

8. P-charts, np-charts and c-charts are used to monitor process attributes.


Related Discussions:- Statistical process control - mean and range charts

Compute present value of cash flow stream by interest rates, Calculate the ...

Calculate the present value of the cash flow stream in problem 2 with the following interest rates- 1. Year 1 = 8% 2. Year 2 = 6% 3. Year 3 = 10% 4. Year 4 = 4% 5. Year 5 = 6% 6. Y

Describe the advantages of work study, Describe the advantages of work stud...

Describe the advantages of work study. The following are the advantages: (i) Uniform and enhanced production flow, (ii) Higher productive efficiency, (iii) Decreased

Linear Programming Problem, Solve the following Linear Programming Problem ...

Solve the following Linear Programming Problem using Simple method. Maximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 = 4 X1 - X2 = 2 X1, X2 = 0

Compute the appropriate loan table, You just took a $20,000, eight-year loa...

You just took a $20,000, eight-year loan. Payments at the end of each year are flat (equal in every year) at an interest rate of 8 percent. Calculate the appropriate loan table, sh

Compute minimum cost service rate, Consider mean arrival rate is 1 customer...

Consider mean arrival rate is 1 customer every 4 mins and mean service time is 5/2 mins. If waiting cost is $5 per unit per min and cost of serviceing one unit is $4. Find minimum

Explain effectiveness of the changes made in the us, Evaluate the effective...

Evaluate the effectiveness of the changes made in the US Air Force Academy after the 2005 religious intolerance complaints

Explain what will be the total costs for each alternative, Ergonomics Inc. ...

Ergonomics Inc. sells ergonomically designed office chairs. The company has the following information: Average demand = 54 units per day Average lead time = 30 days Item u

Explain strategic quality management process, Why is the deployment phase o...

Why is the deployment phase of the strategic quality management process crucial to the achievement of an organization's vision? What are the roles of feedback in the strategic qual

Explain design-oriented hazards, A comprehensive safety assessment report c...

A comprehensive safety assessment report contains both testing and hazard analysis. What types of safety testing would be performed on commercial aircraft to identify any design-o

Explain lincoln electric company don''t want to join a union, Why doesn't L...

Why doesn't Lincoln Electric Company want to join a union?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd