Step 1, Arrange the Data — Sort your raw dataset in ascending order (smallest to largest)., Step 2, Count the Total Items (n) — Find the total number of data points in your set., Step 3, Calculate the Position Indicator (k). Use the specific formula for the measure you want to find., Step 4, Apply the Rounding Rules — Round your position indicator (k) to a whole number to locate the exact data item:, Step 5, Locate the value of Q1, Q2, and Q3 then interpret.

Steps in Calculating Quartiles.

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