Questions about the Accuracy & Precision poster

What’s on the Accuracy & Precision poster?

Accuracy against Precision, side by side. Accuracy: Closeness to the true value; Accuracy: Reduced by systematic error; Accuracy: Fixed by calibration; Accuracy: Cannot improve by repeating; Accuracy: Needs a known reference; Precision: Closeness of repeats to each other; Precision: Limited by random error; Precision: Improved by averaging repeats; Precision: Set by instrument resolution; Precision: Measurable without a reference; A miscalibrated instrument gives precise, tightly clustered, and consistently wrong r…. Random error scatters both ways and averages out. Systematic error shifts everything one way and does not.

Who is the Accuracy & Precision poster for?

Accuracy & Precision belongs to the Physics section rather than to a school year, because physical science is not something one grade owns. Anyone learning methods can pin it up — a beginner, a student mid-course, or someone revising years later.

When should you use the Accuracy & Precision poster?

Accurate means close to true. Precise means repeatable. You can have either without the other. A wall chart earns its place by being glanceable from where the work is happening, so Accuracy & Precision belongs on the wall where that physical science work actually happens, within glancing distance, rather than filed away.

What other posters go with Accuracy & Precision?

Reducing Uncertainty, Analysing Results and Dimensional Analysis sit alongside Accuracy & Precision in the Physics section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Reducing UncertaintyAnalysing ResultsDimensional Analysis

Is the Accuracy & Precision poster free to download and print?

Yes. Accuracy & Precision downloads as a free PDF with no account, no email and no watermark, like everything else in the Physics 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 Accuracy & Precision poster print at?

Accuracy & Precision 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 Accuracy & Precision loses nothing.Printing guide