Resistors for electronic circuits are manufactured on a
high-speed automated machine. The machine is set up to produce a
large run of resistors of 1,000 ohms each. Use Exhibit 10.13.
To set up the machine and to create a control chart to be used
throughout the run, 15 samples were taken with four resistors in
each sample. The complete list of samples and their measured values
are as follows: Use three-sigma control limits.
a. Calculate the mean and range for the above samples. (Round "Mean" to 2 decimal places and "Range" to the nearest whole number.)
b. Determine Xbar and Rbar (Round your answers to 3 decimal places.)
c. Determine the UCL and LCL for a Xbar chart. (Round your answers to 3 decimal places.)
d. Determine the UCL and LCL for Rbar chart. (Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 3 decimal places.)
e. What comments can you make about the
process?
process is in statistical control
process is out of statistical control
a)
b)
X-bar = 998.85
R-bar = 38.07
c)
From table of control chart constant, A2 = 0.729, D3=0, D4=2.282
X-bar Chart
d) R-bar chart
e)
Mean and Range for all samples are between UCL and LCL of X-bar and R-bar chart respectively. So process is in statistical control.
Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up...
Problem 10-25 Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 10.13 To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows: Use three-sigma control limits. SAMPLE NUMBER 1 2 3...
Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 10.13 To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows: Use three-sigma control limits. SAMPLE NUMBER NOEM READINGS (IN OHMS) 1000...
Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 10.13. To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows: Use three-sigma control limits. SAMPLE NUMBER READINGS (IN OHMS) 1 1000...
Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 10.13. To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows: Use three-sigma control limits. SAMPLE NUMBER READINGS (IN OHMS) 1 992...
Problem 10-25 Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 10.13. To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows: Use three-sigma control limits READINGS (IN OHMS) 1014 1019...
a) Resistors for electronic circuits are being manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. To create a control chart to be used throughout the run, 20 samples were taken with four resistors in each sample. The data is shown below and is also available in the attached Excel file. Use MS Excel or Minitab to develop X-bar and R charts, then determine if the process...
0 X 1.TX T 1 .III .2. 3 .III.4. III .5. III .6. II . , 7 . i. Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 10.13 To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of...