Learn 3 measures of data used in math: mean, median, and mode. An introduction to descriptive statistics and central tendency.
Grades 6 through 7 Material from CK-12Preview Assign
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Recognize a statistical question as one that anticipates variability in the data related to the question and accounts for it in the answers. For example, How old am I? is not a statistical question, but How old are the students in my school? is a statistical question because one anticipates variability in students ages
Recognize that a measure of center for a numerical data set summarizes all of its values with a single number, while a measure of variation describes how its values vary with a single number.
Use measures of center and measures of variability for numerical data from random samples to draw informal comparative inferences about two populations.
Informally assess the degree of visual overlap of two numerical data distributions with similar variabilities, measuring the difference between the centers by expressing it as a multiple of a measure of variability.