PSY 301 Lecture Notes - Lecture 7: Pinot Gris, Pinot Noir, Merlot
18 Oct 2018
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Document Summary
Scientists questioned the construct validity because it was hard to determine how they measured the variables. They also had low statistical validity since they did not provide statistical evidence. Example: majors - psych, bio, business, english. Values can be recorded as meaningful numbers. Ordinal: equal intervals between levels, but no true zero point. In addition to grouping, ranking and ordering is possible. Interval: equal intervals between levels, but no true zero point. In addition to grouping and ordering, intervals are standard. Ex: temperature (0f is not the absense of temperature) Ratio: equal intervals and a true zero. In addition to grouping, ordering, and equal intervals, ratios of numbers reflect ratios of magnitude. Nominal: rating of well being on a 5 point scale. Interval: reaction time on a computer task. Ratio: order of finishers in a 5k race. Ratio: degree of pain felt, on a scale of 1 to 10. Ordinal: seating order in an auditorium.
