The paper “Total 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

a. Compute the mean, the standard deviation, and the interquartile range for sodium content of these chocolate puddings.

b. Based on the interquartile range, is there more or less variability in sodium content for the chocolate pudding data than for the tomato catsup data of Cumulative Exercise 5.10?

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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 11,495 Compute the values of the quartiles and the interquartile range. CR5.11 The paper referenced in Exercise 5.10 also gave data on sodium content (in milligrams per kilo- gram) of 10 chocolate puddings made from instant mix: 3099 3112 2401 2824 2682 2510 2297 3959 3068 3700