Quartiles are the values that divide a data set into quarters: Put the values in order Divide the list into four equal parts The Quartiles are at the divisions The interquartile range shows the ...
frac{3(40)}{4}={30}\) so the UQ is the 30th number. To find these from the graph we draw two lines across from the vertical axis, one at 10 and one at 30. We read the values for the quartiles from ...
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