Many nutritional experts have expressed concern about the high levels of sodium in prepared foods. The accompanying data on sodium content (mg) per frozen meal appeared in a newspaper article.
30, 340, 390, 390, 400, 420, 450, 480,500, 520, 530, 600, 630, 680, 690, 720,760, 780, 800, 810, 850, 880 910, 940,950, 990, 1500
a. Compute the five-number summary of the data.
b. Find the IQR and determine whether there are outliers.
c. Draw a horizontal box plot.