What’s on the Sampling & Bias poster
A 6-row table: Bias · What happens.
The biases that most often invalidate a conclusion.
- Selection — The sample is not representative
- Survivorship — Only successes remain to be measured
- Response — Who chose to reply differs from who did not
- Recall — People misremember, systematically
- Observer — Measurement changes the behaviour
- Confirmation — Evidence for the hypothesis is sought harder
Survivorship bias is the hardest to see, because the missing data left no trace. Ask what would have been removed.
Questions about the Sampling & Bias poster
- What’s on the Sampling & Bias poster?
- A 6-row table: Bias · What happens. The biases that most often invalidate a conclusion. Selection — The sample is not representative; Survivorship — Only successes remain to be measured; Response — Who chose to reply differs from who did not; Recall — People misremember, systematically; Observer — Measurement changes the behaviour; Confirmation — Evidence for the hypothesis is sought harder. Survivorship bias is the hardest to see, because the missing data left no trace. Ask what would have been removed.
- Who is the Sampling & Bias poster for?
- Sampling & Bias belongs to the Computing section rather than to a school year, because computing is not something one grade owns. Anyone learning data can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Sampling & Bias poster?
- Ask who is missing from the data. That absence usually matters more than anything present. A wall chart earns its place by being glanceable from where the work is happening, so Sampling & Bias belongs on the wall where that computing work actually happens, within glancing distance, rather than filed away.
- What other posters go with Sampling & Bias?
- ACID, The CAP Theorem and Choosing a Chart sit alongside Sampling & Bias in the Computing section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.ACIDThe CAP TheoremChoosing a Chart
- Is the Sampling & Bias poster free to download and print?
- Yes. Sampling & Bias downloads as a free PDF with no account, no email and no watermark, like everything else in the Computing section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Sampling & Bias poster print at?
- Sampling & Bias is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Sampling & Bias loses nothing.Printing guide
Related posters
Charts that sit alongside Sampling & Bias on the same wall.
Browse every Computing poster, or start from the full catalogue.