PSY201H1 Chapter Notes - Chapter 2: Kelvin, Decimal Mark, New Balance
Document Summary
X/y= terms used for variable to be measured. X(i)= is the (i)th score, which can vary from 1 to n. One of the most frequent operations utilized in statistics in psychology. Usually the summation of all or part of the scores relevant to the distribution. Represented by the greek symbol entitled sigma or . The algebraic phrase typically employed is read as sum of the x variable from i=1 to n , represented algebraically below: Note: the algebraic symbol represents the summation of the x variable scores, from. It is also important to note there are also two types of summation: x^ and ( ^2) . Each of which have a different meaning and must be carefully differentiated in order to carry out the operations appropriately. X^ : sum of the squared x scores; indicates we first square the relevant scores then sum them.
