![]() A stem-and-leaf plot, on the other hand, summarizes the data and preserves the data at the same time. One primary disadvantage of using a histogram to summarize data is that the original data aren't preserved in the graph. ![]() We could, of course, summarize the data using a histogram. Once the data are obtained, it might be nice to summarize the data. ![]() After each person completed the test, they were assigned an intelligence quotient (IQ) based on their performance on the test. ![]() A random sample of 64 people were selected to take the Stanford-Binet Intelligence Test.
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