Measures of center and spread are the focus of this Grade 8 Computer Science worksheet, giving students structured practice with mean, median, mode, and range as tools for describing and comparing data sets. Students move beyond calculating or identifying a measure by considering which numerical summary best answers a particular question about the data. :contentReference[oaicite:0]{index=0}

Use numerical summaries to make sense of data

Students define and correctly use the terms mean, median, mode, and range, then apply those measures when interpreting data. The lesson emphasizes that different summaries reveal different information, so students must decide which measure is most useful for the question being asked rather than treating every data set in the same way.

Students also compare groups using numerical summaries and explain what each value reveals. Another important focus is how changing individual data values can affect the mean, median, mode, and range. This helps students connect calculations with the behavior of a data set and strengthens their reasoning about numerical information.

Students demonstrate understanding in several formats

• Multiple-choice and true-false questions reinforce terminology and interpretation of numerical summaries.
• Short-answer prompts ask students to explain choices and changes within data sets.
• A dialogue places measures of center and spread into a conversational context.
• Matching and cloze activities reinforce vocabulary and relationships among the measures.
• A labeled diagram provides visual practice connected to the data concepts.
• A reading passage develops comprehension of numerical data summaries.
• An essay allows students to develop a longer explanation of the lesson ideas.

Support for teaching and discussion

The worksheet is accompanied by a separate Teacher Guide PDF containing learning objectives, teaching tips, discussion questions, and common mistakes. Teachers can use the guide to introduce the measures, support discussion about choosing an appropriate summary, and address misunderstandings about how changes in data affect different measures.

Fits naturally within a Data and Information unit

This Grade 8 Computer Science resource can be used after direct instruction, for independent practice, homework, lesson review, or to check whether students can interpret and compare numerical summaries.

The worksheet keeps the emphasis on data reasoning: students identify the appropriate measure, compare groups using numerical summaries, interpret what each measure communicates, and examine how changing values affects the results. This makes it useful for reinforcing foundational data analysis skills while connecting mean, median, mode, and range to meaningful decisions about information.