
Everything you need to teach mean, median, mode and range — lesson plans, worksheets, slides, a question bank and assessments. Aligned to Common Core 6.SP.A.3 and 7.SP.B and ready to differentiate for the range of learners in your classroom.
Built around Common Core 6.SP and 7.SP, the pack covers calculating the mean, identifying the median, finding the mode and choosing the most appropriate measure for a given data set. Worked examples use familiar contexts — class test scores, sports stats, household budgets — so students see why each measure matters.
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Each resource ships in three difficulty levels so you can stretch confident statisticians and scaffold students who are still cementing place value and ordering. Worksheets include simple, ungrouped data for Grades 5 and 6, frequency tables and stem-and-leaf plots for Grades 7 to 9, and grouped-data and outlier analysis for Grade 10.
The pack moves from procedural fluency — calculate the mean of this list — to interpretation: which measure best represents the data when there's a clear outlier, and what does that tell us? Higher-order questions ask students to defend their choice of measure, a skill that flows directly into Algebra 1 and Statistics.

Worksheets cover ungrouped data, frequency tables, stem-and-leaf plots and grouped data with class intervals. Each set includes a warm-up, a fluency strip, an applied task and a stretch question, so a single resource can support a full lesson or be sliced into starters and exit tickets.
Practice questions ramp from one-step calculations of the mean of five values up to multi-step problems where students compare two data sets and justify which measure of center tells the truer story. Solutions are fully worked so you can grade in minutes or hand them straight to students for self-review.
Real-world tasks anchor each measure in something students recognize — Grade 7 students compare the median price of a streaming subscription across providers, Grade 9 students use the mean to interpret baseball batting averages, and Grade 10 students explore how outliers in census data shift the mean but not the median.
- You in approximately four minutes
Mean, Median, Mode and Range — the Core of Statistics
Choosing the Right Measure for the Data
Outliers, Skew and Stretching Grade 10 Students
The pack covers the four measures students meet across Common Core 6.SP and 7.SP: mean (the arithmetic average), median (the middle value of an ordered list), mode (the most frequent value) and range (the spread from lowest to highest). Lessons build from concrete examples — a row of test scores, a tally of favorite sports — up to working with frequency tables and grouped data. By the end of the sequence students can calculate each measure, interpret what it tells them about a data set, and explain the relationship between measures of center and measures of spread.
Knowing how to calculate the mean is one skill. Knowing when the mean is the wrong choice is a more advanced one. The resources include comparison tasks where students look at two similar data sets — one with an outlier, one without — and decide which measure of center best represents each. Real contexts help: median home prices, mean rainfall, modal shoe size. By Grade 9, students should be able to argue from the data, not just compute from it, and the worksheets give them the structured practice to get there.
For Grade 10 classes, the pack pushes into outliers, skew and the limits of each measure. Students work with larger data sets drawn from sport, finance and population statistics, calculate measures of center with and without outliers, and discuss the effect on the mean compared with the median. These tasks set up the formal study of standard deviation and statistical inference in Algebra 2 and AP Statistics, and give students the reasoning habits they'll need for senior data analysis.