isixsigma on MSN

Repeatability vs. Precision: What’s the Difference?

Repeatability is the measurement of variation when a process is done multiple times. Precision is the means of reducing ...
Nature

Short-term repeatability of a food frequency questionnaire in New Zealand children aged 1–14 y

Objective: To evaluate the repeatability of a children's food frequency questionnaire (FFQ) by gender, ethnicity, and age group. Design: A 117-item FFQ asking about food intake patterns over the past ...