Variation becomes evidence only when sampling and assumptions are explicit.
Learning outcome: Summarize data, compare uncertainty and avoid confusing scatter with bias.
Summarize data, compare uncertainty and avoid confusing scatter with bias. Diagram is schematic and not to scale.
Core ideas
Build the model
01
random variables and distributions.
02
mean, spread and standard error.
03
regression, residuals and experimental design.
Engineering bridge
Where it is used
probability and experimental reasoning
measurement and quality
simulation verification
Original Lilerno structure and wording. Visuals are conceptual, inputs are not a design specification, and practical work requires appropriate supervision.