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Updated December 7, 2023 at 3:40 PM. Shop Mark & Graham's Big Gift Event and save up to 50% off select items, 20% off clearance + free shipping. Gift-giving isn't always easy. Some people...
Buy one, get one free. " Buy one, get one free " or " two for the price of one " is a common form of sales promotion. Economist Alex Tabarrok has argued that the success of this promotion lies in the fact that consumers value the first unit significantly more than the second one. So compared to a seemingly equivalent "Half price off" promotion ...
amazon.com. $269.95. More. Let's start with our fave treadmill on this list, the Merach Walking Pad, which is currently discounted for 47 percent off. WH executive health and fitness director ...
50% Off. " 50% Off " is the second episode of the fifth season of the AMC television series Better Call Saul, a spin-off series of Breaking Bad. The episode aired on February 24, 2020, on AMC, in the United States. Outside of the United States, the episode premiered on the streaming service Netflix in several countries.
In statistics, the 68–95–99.7 rule, also known as the empirical rule, and sometimes abbreviated 3ss, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: 68%, 95%, and 99.7% of the values lie within one, two, and three standard deviations of the mean, respectively.
This is considered important because items vary in difficulty and the point-biserial correlation cannot attain its theoretical maxima [+1,-1] unless the proportion correct is 0.50 (50% answering the item correctly). The biserial correlation has a correction that, in theory, avoids this issue.