Florida B.E.S.T. MA.6.DP.1.6

Math6th GradeDevelop an understanding of statistics and determine measures of center and measures of variability. Summarize statistical distributions graphically and numerically.

The Standard

Given a real-world scenario, determine and describe how changes in data values impact measures of center and variation.

Florida B.E.S.T. Standards for Mathematics

Teacher's field guide

What This Standard Means

What Students Need to Do

Students calculate measures of center and variation before and after one or more data values change. They describe how the change affects the mean, median, mode, and range.

What Mastery Looks Like

Students correctly calculate each measure before and after a data value changes. They explain which measures changed, which stayed the same, and why.

Common Misconceptions

Students may assume every data change affects all measures. They may also confuse range with the greatest value or expect an outlier to change the median greatly.

How to Assess It

Use this exit ticket: Café sales were 12, 14, 14, 15, and 20; replace 20 with 30, then compare each measure.

Lesson moves

Ways to Teach It

  1. Give groups number cards, then replace one card and have them recalculate the mean, median, mode, and range.

  2. Ask students to explain why changing the greatest value often affects the mean and range more than the median.

  3. Play Change One Number, where partners alter a data set to change exactly two measures while keeping the others unchanged.

  4. Compare team scoring averages before and after one unusually high score, then discuss how that score affects the reported results.

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Printable MA.6.DP.1.6 Worksheet

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