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प्रश्न
Choose the correct alternative:
R is calculated using
पर्याय
xmax – xmin
xmin – xmax
`bar"X"_"max" - bar"X"_"min"`
`\overset{==}{"X"}_"max" - \overset{==}{"X"}_"min"`
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उत्तर
xmax – xmin
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संबंधित प्रश्न
Define Statistical Quality Control
Define chance cause
What do you mean by product control?
Write the control limits for the mean chart
In a production process, eight samples of size 4 are collected and their means and ranges are given below. Construct mean chart and range chart with control limits.
| Samples number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| `bar"X"` | 12 | 13 | 11 | 12 | 14 | 13 | 16 | 15 |
| R | 2 | 5 | 4 | 2 | 3 | 2 | 4 | 3 |
Choose the correct alternative:
How many causes of variation will affect the quality of a product?
Choose the correct alternative:
Variations due to natural disorder is known as
Choose the correct alternative:
`bar"X"` chart is a
Choose the correct alternative:
The upper control limit for `bar"X"` chart is given by
The following data gives the average life(in hours) and range of 12 samples of 5lamps each. The data are
| Sample No | 1 | 2 | 3 | 4 | 5 | 6 |
| Sample Mean | 1080 | 1390 | 1460 | 1380 | 1230 | 1370 |
| Sample Range | 410 | 670 | 180 | 320 | 690 | 450 |
| Sample No | 7 | 8 | 9 | 10 | 11 | 12 |
| Sample Mean | 1310 | 1630 | 1580 | 1510 | 1270 | 1200 |
| Sample Range | 380 | 350 | 270 | 660 | 440 | 310 |
Construct control charts for mean and range. Comment on the control limits.
