Beth E. Klingher
Following are the data analysis standards for grades 6-8 published by the National Council of Teachers of Mathematics or NCTM.
Formulate questions that can be addressed with data and collect, organize, and display relevant data to answer them
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· Formulate questions, design studies, and collect data about a characteristic shared by two populations or different characteristics within one population;
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· Select, create, and use appropriate graphical representations of data, including histograms, box plots, and scatter plots.
Select and use appropriate statistical methods to analyze data
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· Find, use, and interpret measures of center and spread, including mean and interquartile range;
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· Discuss and understand the correspondence between data sets and their graphical representations, especially histograms, stem-and-leaf plots, box plots, and scatter plots.
Develop and evaluate inferences and predictions that are based on data
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· Use observations about differences between two or more samples to make conjectures about the populations from which the samples were taken;
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· Make conjectures about possible relationships between two characteristics of a sample on the basis of scatter plots of the data and approximate lines of fit;
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· Use conjectures to formulate new questions and plan new studies to answer them.