Measurement Flashcards
chapter 1 (10 cards)
Define error
Error is defined as the difference between an observation and the true value.
Define systematic error
Systematic error occur according to some fixed rule or pattern such that they yield a consistent over-estimation or under-estimation of the true value of the measured quantity.
Define random error
Random error occurs without a fixed pattern such that a set of measurements done under the same conditions have an equally likely chance of being greater or less than the true value.
Define accuracy
Accuracy refers to how closely a measured value agrees with the true value.
Define precision
Precision refers to how closely individual measurements agree with each other without reference to any true value.
Define uncertainty
Uncertainty is an estimate of systematic or random errors inherent in the measurement or calculation.
Define scalar quantity
A scalar is a quantity which has magnitude only.
Estimate frequency of radio waves
100MHz
Define vector quantity
A vector quantity is a quantity which has both magnitude and direction
Estimate radius of nucleus
10^-15 m
