Assertion: correlation | /r/HasProperty | viewed as the cosine of the angle
Facets:
value: for centered data
type: OTHER
Source sentences:
text: For centered data (i.e., data which have been shifted by the sample means of their respective variables so as to have an average of zero for each variable), the correlation coefficient can also be viewed as the cosine of the angle θ between the two observed vectors in N-dimensional space (for N observations of each variable):ch. 5 (as illustrated for a special case in the next paragraph).