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immysheep's version from 2017-06-17 13:11

Section

Question Answer
Benefit of array formatEasy to read by eye
Con of array formatNo. of arrays increases as no. of observations increases.
Benefit of relational formatAll in one place
Con of relational formatIt can be redundant
Primary dataActual observations
Secondary dataSummary data, calculated
Hierarchy of data types, 1L, logical
Hierarchy of data types, 2R, Numerical
Hierarchy of data types, 3C, Complex
Hierarchy of data types, 4M, Character
The dot producta.b = a1b1 + a2b2 + a3b3
memorize

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