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# Research 1

### Principles of Measurement

Numbers have equal intervals measured from true zero = which level of measurement? Ratio
Numbers have equal interval but no true zero = which level of measurement Interval
Numbers indicate rank order in which level of measurement? Ordinal
Numerals are category labels in which level of measurement? Nominal
What is the lowest level of measurement? Nominal
Consists of categories coded by name, number, letter or symbol though none have quantitative value. Labels for ID. Nominal
Blood type, gender, handedness, type of mental illness and area code are examples of.... Nominal
this measurement scale requires categories to be rank ordered on the basis of an operationally defined characteristic or property. Ordinal
Data are organized into adjacent categories exhibiting a "greater than-less than" relationship. Ordinal
Normal>impaired>absent, none>minimal>moderate>severe, good>fair>poor, are all examples of Ordinal
Manual Muscle Test, funciton, and pn are examples of Ordinal
Calender years, degrees C and F are examples of Interval
What scale possesses the rank-order characteristics of an ordinal scale but also demonstrates known and equal distances between the units of measurement. Interval
What is the highest level of measurement? Ratio
This is an interval scale with a true zero. Ratio
ROM, height, weight, and force are examples of? Ratio
A measure computed for all potential observations in a population is a what? Parameter
A measure computed from actual observations on a sample is a what? Statistic
A measured characteristic of a population is a? Parameter
A measured characteristic of a sample is a? Statistic
Statistical procedures used for estimating population parameters and for testing hypothesis based on population parameters; for use with interval and ration measures. Parametric Stats
Set of statistical procedures that are not based on assumptions about pop parameters; used with nominal and ordinal scales. Non-parametric Stats
The degree to which scores are free from errors of measurement refers to? Reliability
Appropriateness, meaningfulness, and usefulness of data from measurement refers to? Validity
Created by: txst fall 2008