The median, by definition, tells you the "half way point" of your data. Exactly half of the observations in the dataset will be less than the median and half will be greater than the median.
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The median tells you it is the middle of the data set. It tells you almost
the average of the data set
If the median is exactly in the middle of the box, and the box is exactly in the middle of the whiskers, then skewness = 0. The data are skewed if either the median is off-centre in the box, or if the box is off-centre overall.
No, not all data sets have a mode but all data sets have a mean and median.
A frequency diagram or, for grouped data, an histogram.
No. A median makes no sense for categorical data. For example, if you have 10 red cars, 15 blue cars and 20 black cars, what is the median?
the median in math is the middle number of your data for example: 1,3,5,7,9. the median in that is 5.