Create an xbar and r chart of the data

Assignment Help Operation Management

Reference no: EM131866572

The question is Suppose you work at a car assembly plant in a department that assembles engines. In an operating engine, parts of the crankshaft move up and down a certain distance from an ideal baseline position. (A to B Distance) is the distance (in mm) from the actual (A) position of a point on the crankshaft to the baseline (B) position.

To ensure production quality, you took five measurements each working day, from September 28 through October 15, and then ten per day from the 18th through the 25th. Create an Xbar and R Chart of the data (What does it show) does it fail any test? Now let's say you want to look for small shifts away from the target, you want to plot the CUSUMs.

Follow these directions to create the charts Xbar - R

1.Open the worksheet CRANKSH.MTW.

2 Choose Stat > Control Charts > Variables Charts for Subgroups > Xbar.

3 Choose all observations for a chart are in one column, then enter AtoBDist.

4 In Subgroup sizes, enter Day.

5 Click Xbar Options, then click the Tests tab.

6 Choose Perform all tests for special causes.

7 Click the S Limits tab.

8 Under Display control limits at, enter 1 2 3 in these multiples of the standard deviation. Click OK in each dialog box. CUSUM CHART

1 Open the worksheet CRANKSH.MTW.

2 Choose Stat > Control Charts > Time-weighted Charts > CUSUM.

3 Choose All observations for a chart are in one column, then enter AtoBDist.

4 In Subgroup sizes, enter

5. Click OK. Answer the following questions

1. Did the Xbar-R chart fail any test? __________ If so how many__________ What test(s) did it fail? __________________________________________________________________________________

2. Where there any points outside the control lines of the CUSUM chart? ___________

3. At what point if any was outside of the CUSUM chart?

4. What would a point outside the CUSUM chart indicate, what action should be taken?

Reference no: EM131866572

Questions Cloud

How consumption and feedback are critical factors : Discuss the basic fundamentals of the intelligence cycle/matrix and how consumption and feedback are critical factors in the process in ensuring the process.

Discuss the properties of the world wide web : Discuss the difference between the Internet and the World Wide Web. How has business changed over the last decade because of the Internet?

Complete an analysis using the porters five forces start : Choose a company(not coca-cola) and complete an analysis using the Porter's Five Forces start with introduction about the company.

Identify different types of cultural barrier : Discuss what companies have to do (or not to do) if they plan to do business abroad and with others cultures. Identify types of cultural barrier to communicate.

Create an xbar and r chart of the data : Create an Xbar and R Chart of the data (What does it show) does it fail any test? Now let's say you want to look for small shifts away from the target.

Discuss the challenges involved in staffing operations : Discuss the challenges involved in staffing operations in emerging markets. Discuss the common causes of expatriate failure.

How would you use the mars model : The employees were made aware several months in advance of the changes, however, the implementation date kept getting pushed back.

Discuss strategic types of corporate social responsibility : Discuss the difference between ethical, altruistic, and strategic types of corporate social responsibility (CSR). Research a company's CSP online.

Name a company the practices horizontal integration : First, name a company the practices horizontal integration. Describe the structure. Now do the same for a company vertically integrated.

User Account

All Pages