Basic Descriptive statistics A quality characteristic of interest for a rice-bag-filling process is the weight of the rice in the individual bags.

2. Basic Descriptive statistics
A quality characteristic of interest for a rice-bag-filling process is the weight of the rice in the individual bags. If the bags are under filled, the company may be in violation of the truth-in-labeling laws. In this example, the label weight on the package indicates that, on average, there are 15 pounds of rice in a bag. If the average amount of rice in a bag exceeds the label weight, the company is giving away product. Getting an exact amount of rice in a bag is problematic because of variation in the temperature and humidity inside the factory, differences in the size of the rice, and the extremely fast filling operation of the machine (approximately 150 bags a minute). The following table provides the weight in pounds of a sample of 50 bags produced in one hour by a single machine:
 
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