Comparing Two Data Sets: 8th Grade Performance Task
A project-based performance task in which 8th graders act as data researchers, collecting at least 10 real-world data points on two related groups (such as two NBA players' scores), organizing them in a table, and building dot plot and box plot displays to compare the sets. It builds data collection, statistical representation, and interpretation skills, and is designed as a multi-part alternative to a traditional test, with input fields guiding students through defining their research question and gathering data.
“I want to do a performance task for my student to do instead a test. I would like for them to do research to collect data on two different situtations. Like two NBA player score. they need at least 10 pieces of data. Enter data into a table. and make two data displays dot plot and box plot”
Teacher Guide & Tips
- Use this as an alternative assessment for a unit on data displays and measures of center and spread, with the collection phase taking roughly one class period and the full project spanning several days.
- Discussion question: Why might two groups look different in a dot plot but have similar medians, and what does the box plot reveal that the dot plot does not?
- Scaffold for struggling readers: Provide a pre-made table template with labeled columns and a worked example of plotting five values on a number line before students begin their own data.
- Extension for advanced students: Have them calculate the mean, median, IQR, and range for both sets and write a short argument about which group is more consistent, supported by their displays.
- Estimated time: About 3 to 5 class periods, depending on how much time students spend on data collection and graphing.
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Teachers use Diffit to get quality materials for their unique classrooms. Adjust difficulty, add scaffolds, or change the topic to get started.
Try Diffit for free“I want to do a performance task for my student to do instead a test. I would like for them to do research to collect data on two different situtations. Like two NBA player score. they need at least 10 pieces of data. Enter data into a table. and make two data displays dot plot and box plot”
Teacher Guide & Tips
- Use this as an alternative assessment for a unit on data displays and measures of center and spread, with the collection phase taking roughly one class period and the full project spanning several days.
- Discussion question: Why might two groups look different in a dot plot but have similar medians, and what does the box plot reveal that the dot plot does not?
- Scaffold for struggling readers: Provide a pre-made table template with labeled columns and a worked example of plotting five values on a number line before students begin their own data.
- Extension for advanced students: Have them calculate the mean, median, IQR, and range for both sets and write a short argument about which group is more consistent, supported by their displays.
- Estimated time: About 3 to 5 class periods, depending on how much time students spend on data collection and graphing.
Comparing Two Data Sets: 8th Grade Performance Task
A project-based performance task in which 8th graders act as data researchers, collecting at least 10 real-world data points on two related groups (such as two NBA players' scores), organizing them in a table, and building dot plot and box plot displays to compare the sets. It builds data collection, statistical representation, and interpretation skills, and is designed as a multi-part alternative to a traditional test, with input fields guiding students through defining their research question and gathering data.
What is Diffit?
Teachers use Diffit to get quality materials for their unique classrooms. Adjust difficulty, add scaffolds, or change the topic to get started.
Try Diffit for free