Use a 0.05 significance level with analysis of variance to test the claim that the three books have the same mean Flesch-Kincaid Grade Level. Do the three books appear to be written with the same reading level?

Use the Flesch-Kincaid Grade Level measurements from randomly selected pages in Tom Clancy?s The Bear and the Dragon, J. K. Rowling?s Harry Potter and the Sorcerer?s Stone, and Leo Tolstoy?s War and Peace. Those measurements reflect the reading level of the sampled text.

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Clancy 8.8 5.4 5.0 7.6 9.0 3.2 12.0 4.9 4.6 5.0 6.4 6.1 Rowling 5.2 3.7 6.1 4.9 4.4 3.2 5.6 6.9 5.7 4.1 6.7 4.4 Tolstoy 8.6 9.8 6.1 5.9 7.7 10.9 8.2 7.2 11.0 11.5 8.4 5.9