Question

1.     T F Sometimes the interquartile range is used in establishing x bar charts

2.     T F The selection of the equation to determine the probability of accepting a sample is partially based on the size of the sample.

3.     T F R charts may be used in place of S charts to control the variability of a measurement

4.     T F If I was interested in the control of the number of defects on a particular product, I would use a p chart

5.     T F The Kemp nomogram helps us determine the allowable number of defectives in a sample

Answer 1

1. False

Standard deviation is used in establishing X-bar charts

2. False

3. True

R-charts and S-charts are both used to control variability of measurement

4. False

c-charts are used to contol the number of defects of a particular product, wheres p-charts are used to determine the number of defectives in a process.

5. True

The Kemp nomogram helps us to detrmine the allowable number of defectives in a sample by segegating the quality levels into three categories, i.e. acceptance quality level, barely tolerable and worse quality to be rejected.