Mathematics (2019) Grade(s): 7 - Grade 7 Accelerated

MA19.7A.27

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. [Grade 7, 11]

Unpacked Content

Knowledge

Students know:
  • Populations can be compared using measures of center and measures of variability

Skills

Students are able to:
  • informally assess the degree of visual overlap of two numerical data distributions with similar variabilities.
  • Measure the difference between the centers by expressing it as a multiple of a measure of variability.

Understanding

Students understand that:
  • outliers skew data, which in turn affects the display.
  • Measures of center give information about the location of mean, median and mode, whereas measures of variability give information about how spread out the data is.

Vocabulary

  • Visual overlap
  • Measure of variability
  • Data distribution
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