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The Missing Data: Survivorship and Selection Bias

Created by Argraide
Updated October 27th, 2026
The Missing Data: Survivorship and Selection Bias

At a glance

Staff pick
Picked by the Argraide team
Play mode
👥 Group
Format
🖼️ 2D
Length
⏱ About 20 minutes
Subject
Science
Grade
9
Curriculum
Alberta
Curriculum code
9SL2

About this activity

A live data-detective casebook. Claims from Fescue Flats, a made-up Alberta town, arrive with convincing invented data and a hidden flaw. Phones make a first call, the big screen adds the missing data beside the room's split, and every student names the bias (or clears a fair claim) and picks the data that would really test it.

What students learn

  • Interpret data for evidence of survivorship bias and selection bias (9SL2)
  • Describe how survivorship bias, selection bias and an inappropriate scale lead to misleading conclusions (9SL2)
  • Choose the data that would fairly test a claim (9SL2)
  • Differentiate claims backed by fair evidence from unscientific claims built on biased data (9SL2)

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