1. What kinds of methods led to the production of high-quality products in the 1980s?
2. Statistical methods allow engineers to make decisions despite ___________ and _________ in the data.
3. In Example 1.3, how are the plotted values (e.g. the point at 20% and almost 1000) determined?
4. The mean of a sample, , is an estimate of ___________________________.
5. What is the "commonsense" idea of probability?
6. We have a bag with equal numbers of black and white marbles. We think about drawing a random sample, with replacement , of 20 marbles. We think it most likely that 10 would be black and 10 white in our sample. In statistics, this is known as _______________.
7. We have a bag with 20 marbles, some red and some green, but unknown just what proportion. We draw a random sample, with replacement, of 10 marbles. Three are red and seven green. We make a "best guess" that there are 6 red and 14 green marbles in the bag. This is a commonsense version of the statistical procedure called _______________.
8. The mean of a set of measures is analogous to what physical entity?
9. The variance of a set of measures is analogous to what physical entity?
10. What population quantity does the sample variance estimate?
11. What two disciplines is statistical theory based on?