State whether the following statements are True or False & explain the reason for same
1. Variables are characteristics that are classified into one of two categories.
2. Sample sizes for variables are typically in the range of 4 to 20.
3. The single most important statistical concept in production management is sampling.
4. If a control chart indicates a favorable change in a production process, then an investigation should be conducted to determine the cause of the change.
5. P charts can have lower control limits less than zero.
6. Destructive tests are tests where no tested products survive.
7. One way to reduce the producer's risk is to increase the sample size.
8. “D” in DMAIC stands for Design
9. Under TOC, once all the internal constraints are overcome, the external market can become the bottleneck.
10. As per the principles of TOC, a company should always focus on increasing sales revenue as one of the performance measures.