The paper Total Diet Study Statistics on Element Results (Food and Drug Administration, April 25, 2000) gave

The paper €œTotal Diet Study Statistics on Element Results€ (Food and Drug Administration, April 25, 2000) gave information on sodium content for various types of foods. Twenty-six tomato catsups were analyzed. Data consistent with summary quantities given in the paper were

Compute the values of the quartiles and the interquartile range.

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Sodium content (mg/kg) 12,148 10,426 10,912 9116 13,226 11,663 11,781 10,680 8457 10,788 12,605 10,591 11,040 10,815 12,962 11,644 10,047 10,478 10,108 12,353 11,778 11,092 11,673 8758 11,145 ,495