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gregmacfarlane / parks_access

Notes and studies related to parks accessibility papers
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Formula issues #6

Closed gregmacfarlane closed 4 years ago

gregmacfarlane commented 4 years ago

Reviewer 2:

Eqn 4: Please bold the beta (as per your following sentence). Eqn 4 (and subsequent): I understand the formula for linear regression is \beta X rather than X \beta.

gregmacfarlane commented 4 years ago

The X\beta construction is most common when, as in the current case, the X represents a matrix rather than a single vector variable. This is important when considering the dimensionality of matrix multiplication. The dimension of X is n by p where p is the number of predictor variables. The dimension of \beta is p by 1; thus the product X\beta is an n by 1 vector.

gregmacfarlane commented 4 years ago

We have edited all of the equations to use bold-faced font when referring to variables that are in fact vectors.