2022 Introduction to Statistics in Research Mitchell 2nd ed

I N T R O T O R E S E A R C H : D A T A V I S U A L I Z A T I O N & C O M M O N S T A T T E S T S

Now using Statistics Kingdom, let's look at School B in Statistics Kingdom. Notice where the median is (56) and the longer whisker on the right. This means it is positively skewed. In fact, the calculation shown for the Skewness at Statistics Kingdom shows a positive skewness of +1.506919.

Table 58: Box Plot for English School B from Statistics Kingdom

Now using Statistics Kingdom, let's look at School C. Remember, Statistics Kingdom is a resource that is free. It includes basic stats, fit tests, sample size, mean tests, variance tests, regression, and correlation. I like the idea behind this site because the authors consider all of us statistically impaired including himself!

Link to Statistics Kingdom: https://www.statskingdom.com/boxplot- maker.html

Notice in the comparison chart above School C has an outlier. You can tell this because you see a dot outside of the box plot. When this chart was created in Statistics Kingdom, the outlier was excluded.

Table 59: Box Plot for English for School C - from Statistics Kingdom

Now let's identify a few other things found at Statistics Kingdom. Notice the key points listed in this data; the medium, the minimum and maximum, first and third quartile, AND there is an outlier (45). When choosing the key design in Statistics Kingdom, the outlier was excluded in the visual, but notice the original school comparison. You can clearly see the grey dot for English School C. Also Statistics Kingdom provides additional information about the chart you see above.

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