18 · Statistical Investigations I [Stats I] — printable QR sheet

5 stations, one per page. Print (portrait), post one at each station. Talk-it-through problems take any real attempt for credit; timed problems gate hint 2 at 30 s and Reveal at 60 s past that.

Printer tip: Ctrl/Cmd-P → portrait → “Background graphics” on if you want the flavor colors.

Station 1 of 5

1.1 — Statistical Questions & Hypotheses

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QR for station 1
Station code 7a78d713 students can type this at the front page instead of scanning
https://geo-stations.mrritchey.com/7a78d713/
Scan → work it on the whiteboard → type the answer → show the summary screen.
Station 2 of 5

1.2 — Study Design: Surveys, Experiments, Observational Studies

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QR for station 2
Station code 3ec77306 students can type this at the front page instead of scanning
https://geo-stations.mrritchey.com/3ec77306/
Scan → work it on the whiteboard → type the answer → show the summary screen.
Station 3 of 5

1.3 — Data Collection, Quality & Bias

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QR for station 3
Station code 82a71e1e students can type this at the front page instead of scanning
https://geo-stations.mrritchey.com/82a71e1e/
Scan → work it on the whiteboard → type the answer → show the summary screen.
Station 4 of 5

1.4 — Correlation vs. Causation

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QR for station 4
Station code 47120292 students can type this at the front page instead of scanning
https://geo-stations.mrritchey.com/47120292/
Scan → work it on the whiteboard → type the answer → show the summary screen.
Station 5 of 5

— Review (Stats I)

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QR for station 5
Station code 25ca77d3 students can type this at the front page instead of scanning
https://geo-stations.mrritchey.com/25ca77d3/
Scan → work it on the whiteboard → type the answer → show the summary screen.