Exhibit 2-2 In a Story Written in December 2002, the Des Moines

question 13

Essay

Exhibit 2-2
In a story written in December 2002, the Des Moines Register reported on the percentages of students who qualify for Free/Reduced lunch programs in the elementary schools in Des Moines, Iowa. The data, by elementary school, appears in the table below.

-Refer to Exhibit 2-2.
(a)Construct a histogram for these data, using the following class intervals:
0 to < 20
20 to < 40, etc.
(b)Describe the distribution of Free/Reduced eligibility percents, and note any unusual features.

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Definitions:

Pollen Grains

Microscopic structures produced by the male parts of plants, responsible for carrying male gametes to the female part for fertilization.

Progymnosperms

An extinct group of plants that are considered to be the ancestors of both gymnosperms and angiosperms, showing features typical of both groups.

Megaphylls

Leaves with a highly branched vascular system, characteristic of most modern plants, contrasted with microphylls of some ancient lineages.

Woody Tissue

Plant tissue composed mainly of xylem, providing structural support and conduction of water and nutrients; commonly found in trees and shrubs.