A researcher describes the characteristics of three groups of subjects in a study. What statistics should the researcher use to analyze this demographic data?
1. Inferential statistics
2. Class intervals
3. Descriptive statistics
4. Measures of central tendency
3
Rationale 1: Inferential statistics allow a researcher to infer data from a sample to a population.
Rationale 2: Class intervals are a class of descriptive statistics used to group a large number of scores.
Rationale 3: Descriptive statistics are used to organize and summarize data from samples.
Rationale 4: Measures of central tendency summarize a frequency distribution with a single number. The description of the characteristics of three groups of subjects would use more than measures of central tendency.
Global Rationale:
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