Exhibit 2-3 There Has Been a Recent Increase in the Popularity of Popularity

question 34

Essay

Exhibit 2-3
There has been a recent increase in the popularity of caffeine-containing "energy drinks" or "functional beverages"--substances that are considered to be food that may provide some health benefit. However, caffeine in these drinks presents an important health concern, especially for women of childbearing age. Studies have shown an increased risk of spontaneous abortion and low birth weight children to women consuming more than 150 mg/day of caffeine. In a recent study, eighteen 12-oz servings of different brands of carbonated sodas were analyzed to ascertain their caffeine content, with the results presented below. The data are in mg/12-oz serving; if no caffeine was detected, this is reported as "* mg/serving."
Caffeine (mg) in 12 oz servings of Carbonated Sodas

-Refer to Exhibit 2-3.
(a)Construct a stem and leaf plot of the caffeine-content for the detected amounts of caffeine.
(b)In a few sentences, describe the distribution of the caffeine-content. How would your description change if the "none detected" were treated as 0.0 mg/serving?

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Definitions:

Empty Vector

A vector data structure that contains no elements and has a size of zero.

Arrays

Data structures that store multiple elements of the same type in an indexed collection.

Vectors

A class in Java that implements a growable array of objects, providing methods to manipulate the size and contents of the array.