PSYC 2F23 Lecture 2: PSYC 2F23--LECT 2
30 Sep 2016
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Lecture #2: basic mathematical and measurement concepts: variables , x, y, a, b, etc , a particular score of a variable x1, x2, x3 y1, a1, b1, etc, sigma greek letter. X2 and (x)2 are not the same. (x2): sum of the square, bracket: bedmas. We can count frequency: ordinal (ranked) The numbers on the scale represent rank ordering. Rank ordering is based on the magnitude of the variable being measured: interval scales. The numbers on the scale represent the raw score magnitude. Equal intervals between two adjacent units (i. e. , distance between points is the same: ratio. It has a true zero (i. e. , absolute absence of the variable measured: continuous variable is one that theoretically can have an infinite number of values between two adjacent units. Time: discrete variable is one that there are no possible values between two adjacent units. Number of goals (as in soccer or hockey)
