Statistics and Probability Glossary
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VectorsVectors are a type of
matrix
having only one column or one
row.
Vectors come in two flavors: column vectors and
row vectors. For example, matrix a
is a column vector, and matrix a' is a row vector.
We use lower-case, boldface letters to represent column vectors. And since the
transpose
of a column vector is a row vector, we use lower-case,
boldface letters plus a prime to represent row vectors.
Thus, vector b
would be a column vector, and vector b' would be a
row vector. |