NUR 408 Lecture Notes - Lecture 7: Level Of Measurement, Standard Deviation, Null Hypothesis
Document Summary
Assignment of numbers to simply classify characteristics into categories. Sorting of categories on the basis of their standing relative to one another. Rank-ordering does not indicate magnitude of difference (strength) Possesses all characteristics of nominal and ordinal scale in addition to having an equal interval size based on an actual unit of measurement. Distances between any two numbers are known and of equal size. Equal interval size based on an actual unit of measurement. There is an absolute zero point, i. e. represents absolutely none of the property one is measuring. A systematic arrangement of numeric values on a variable from lowest to highest and a count of the number of times (and/or percentage) each value was obtained. Frequency distributions can be described in terms of: Can be presented in a table (ns and percentages) or graphically (e. g. , frequency polygons) Positive skew (long tail points to the right) Negative skew (long tail points to the left)
