Bias — Algebra II, what it means and where it is taught
A flaw in how the sample was gathered that tilts the result in one direction.
Taught in Algebra II.
Where it is taught
Practise this idea
1 question in the course bank use Bias, in Sampling, Simulation & Inference.
Problem 1
Why is a random sample preferred?
- It has no systematic tilt
- It is always larger
- It is cheaper
- It avoids the need for a margin of error
Worked answer
It has no systematic tilt
Random selection gives every member an equal chance
So errors are noise, not bias