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is a educational Infographics - By .It helps students in grades 7 practice the following standards 7.SP.B.4.
1. 7.SP.B.4 : Use measures of center and measures of variability for numerical data from random samples to draw informal comparative inferences about two populations. For example, decide whether the words in a chapter of a seventh-grade science book are generally longer than the words in a chapter of a fourth-grade science book..
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