Statistics questions2

Please answer each item with at least 100 words and citation of references used.

1.Explain how regression can help a business compare variables that can lead to future sales, profits, employees, products, etc.  Give an example.

2.  Control Charts - are used in health care to understand deviation from the norm.  Mortality rates can be used on a control chart.  Explain where and how else control charts are used? 

3.  Marketing has several variables, such as product packaging, sized, color brands, prices, etc.  Explain the significance of factor analysis in pricing and its impact on decision making.