14 12 10 8 6 4 2 0 Average rainfall (inches) May June July August September Average Monthly Rainfall in

Question

14 12 10 8 6 4 2 0 Average rainfall (inches) May June July August September Average Monthly Rainfall in Select Puerto Rican Cities from 1981 to 2010 Month Rinc�n Isabela San Sebasti�n Ponce The following 4 lines are shown: Rinc�n Isabela San Sebasti�n Ponce The Rinc�n line: Begins at May, 6.3 inches Falls gradually to June, 5.8 inches Rises gradually to July, 6.5 inches Rises sharply to August, 8.3 inches Falls sharply to September, 6.4 inches The Isabela line: Begins at May, 7.6 inches Falls gradually to June, 6.4 inches Falls gradually to July, 4.7 inches Rises gradually to August, 6.4 inches Falls gradually to September, 6.1 inches The San Sebasti�n line: Begins at May, 12.9 inches Falls gradually to June, 11.3 inches Falls sharply to July, 7.9 inches Rises sharply to August, 10.3 inches Rises gradually to September, 10.9 inches The Ponce line: Begins at May, 4 inches Falls sharply to June, 1.9 inches Rises gradually to July, 2.8 inches Rises gradually to August, 3.9 inches Rises gradually to September, 5.9 inches A student is presenting average monthly rainfall totals in various Puerto Rican cities for a science class. During the presentation, the student notes that in September ______ blank Which choice most effectively uses data from the graph to complete the statement?

Accepted Answer

Choice C is the best answer because it most effectively uses data from the graph to complete the statement about average rainfall in September in select Puerto Rican cities. The graph shows that between 1981 and 2010 Rinc&oacute;n, Ponce, and Isabela all had an average rainfall during the month of September of about 6 inches, and San Sebasti&aacute;n had an average rainfall of nearly 11 inches. Describing the average September rainfall of Rinc&oacute;n, Ponce, and Isabela as below 8 inches and the average September rainfall of San Sebasti&aacute;n as greater than 8 inches therefore offers an accurate description of the data in the graph and most effectively completes the statement. Choice A is incorrect because it offers an inaccurate interpretation of the data in the graph. The graph shows that in September, Rinc&oacute;n, Isabela, and Ponce all have an average rainfall of about 6 inches, and San Sebasti&aacute;n has an average rainfall of nearly 11 inches. Therefore, Rinc&oacute;n&rsquo;s average rainfall is the same as, not greater than, that of Isabela and Ponce, and it is below, not greater than, that of San Sebasti&aacute;n. Choice B is incorrect because it inaccurately describes the data in the graph. In September, Rinc&oacute;n and Ponce have an average rainfall of about 6 inches, not 5 inches; Isabela has an average rainfall of about 6 inches, not 10 inches; and San Sebasti&aacute;n has an average rainfall of nearly 11 inches, not 10 inches. Choice D is incorrect because although the graph shows a similar average rainfall (about 6 inches) for Rinc&oacute;n and Isabela in September, it doesn&rsquo;t show that Ponce has a similar average rainfall to San Sebasti&aacute;n during this month. In September, Ponce&rsquo;s average rainfall is about 6 inches, whereas San Sebasti&aacute;n&rsquo;s average rainfall is nearly 11 inches.

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