Question 1. How many statements are true?
(A) 0Â Â (B) 1Â Â (C) 2Â Â (D) 3Â Â (E) 4
Statement 1. The P and C charts arefor attributes and the M and R charts are for variables.
Statement 2. The upper control limitis three standard deviations of the mean above the center line andthe lower control limit is three standard deviations of the meanbelow the mean of the quality characteristic.
Statement 3. The sample size for theexperiment that determines the estimates of the parameters can bedifferent than the sample size used to construct the M-chart, theR-chart, the P-chart, and the C-chart.
Statement 4. The P chart monitors theproportion of an attribute quality characteristic which the C chartmonitors the count of an attribute quality characteristic.
Questions 2-3
The following experiment was carefully designed and performed ona process under control. A random sample of 80 is drawn for eachsample and the number of attributes is recorded.
Sample #: | 1 | 2 | 3 | 4 | 5 | 6 |
Attributes: | 4 | 3 | 5 | 3 | 4 | 5 |
Question 2. What is the upper control limit, center line, andlower control limit for a P-chart with n=96? | (A) ( | 0.000 | , | 0.050 | , | 0.140 | ) | | (B) ( | -0.040 | , | 0.050 | , | 0.140 | ) | | (C) ( | 0.020 | , | 0.050 | , | 0.080 | ) | | (D) ( | -0.023 | , | 0.050 | , | 0.123 | ) | | (E) None of the above |
Question 3. What is the upper control limit, center line, andlower control limit for a C-chart with n=176? | (A) ( | 0.000 | , | 1.000 | , | 2.000 | ) | | (B) ( | -2.000 | , | 4.000 | , | 4.073 | ) | | (C) ( | 0.000 | , | 1.000 | , | 4.000 | ) | | (D) ( | -2.000 | , | 1.000 | , | 4.000 | ) | | (E) None of the above |
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Questions 4-5
Destructive sampling was performed measuring the life of sixbatteries in hours.
| | Sample A | Sample B | Sample C |
| Measurement #1 | 171 | 173 | 187 |
| Measurement#2 | 185 | 187 | 201 |
Question 4. What is the upper control limit, center line, andlower control limit for an M-chart? | (A) ( | 153.920 | , | 184 | , | 214.080 | ) | | (B) ( | 157.680 | , | 184 | , | 210.320 | ) | | (C) ( | 169.678 | , | 184 | , | 198.322 | ) | | (D) ( | 173.794 | , | 184 | , | 194.206 | ) | | (E) None of the above |
Question 5. What is the upper control limit, center line, andlower control limit for an R-chart? | (A) ( | 0 | , | 14 | , | 36.050 | ) | | (B) ( | 0 | , | 14 | , | 31.948 | ) | | (C) ( | 0 | , | 16 | , | 52.272 | ) | | (D) ( | 0 | , | 14 | , | 45.738 | ) | | (E) None of the above |
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