“You never want a serious crisis to go to waste. And what I mean by that, it’s an opportunity to do things you think you could not do before.” -Rahm Emanuel, Barack Obama’s Chief of Staff from 2009 to 2010. Only a couple of weeks ago, if anyone told you that your entire...

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Basic STAT Commonly Used Terms #STATSNOB The population is the entire group that the researchers are interested in. Because it is usually too costly to gather the data for the entire population, researchers will collect data from a sample, representing a subset of the population.  A parameter is a true quantity for the...

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Normality test is used to determine if the variable is normally distributed. Doing this test is easy in Minitab. Follow these simple steps: (See the screenshots) 1) Click Stats........Basic Statistics............Normality test  2) Click on the most top empty box of the window, then click on your variable, click select then choose any test amongAnderson-Darling,...

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Normal Distribution Curve The curve is symmetrical about a vertical line drawn through the mean, µ. In theory, the mean is the same as the median since the graph is symmetric about µ. As the notation indicates, the normal distribution depends only on the mean and the standard deviation.  Since the area under...

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