Dustup, a cleaning products company, was trying to revive its old wood floor waxing product. it began offering an augmented service of a small brochure called "ask a wood floor expert" to its bottles. the brochure included information and a customer support hotline. however, shoppers removed the brochure from bottles in the store, so few bottles were purchased. at the same time, dustup began receiving a flood of calls to its hotline. this increased dustup’s costs 30% over projections. what question did the company forget to ask before launching its add-on?

answer; coefficient of correlation;

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.