how to find iqr in excel?
['Step 2: Click a blank cell (for example, click cell B2) and then type =QUARTILE(A2:A10,1). ... ', 'Step 3: Click a second blank cell (for example, click cell B3) and then type =QUARTILE(A2:A10,3). ... ', 'Step 4: Click a third blank cell (for example, click cell B4) and then type =B3-B2.']