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Greek Letters in
Measurement and
Statistics: Is it All
Greek to You?
Elena C. Papanastasiou
Because
I am Greek, and work in the fietd
of
measurement and statistics in the United States, many
people approactr me io ask questions about
i
g . Matrix Algebra
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Em 503 (MSPF). A“! K' 8”“
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3.1 Basic Deﬁnitions R
An “m x n matrix“ is a. rectangular array of “mu” real numbers arranged in “m” rows and “1:,”
columns.
a“ 0.12 “In
A = azl