Definitions Flashcards
Statistics
is the science of:
Collection
Organization
Summarization
Analyzation
Conclusion/Question
Sample vs population
Subset of a population;
Total individual/observation which the information is desired
Statistic vs parameter
Numerical summary of the sample;
Numerical summary of the population
Descriptive vs Inferential statistics
Organization and
Summarization of data;
Result of sample,
Extend to population,
Reliability measurement
Process of Statistics
- Identify research objective
- Collect information needed to answer question
- Organize and Summarize
- Draw conclusion
Qualitative vs quantitative variables
Categorical, class or category;
Numerical, amount or quantity
Discrete vs continuous variables
Both quantitative
Finite, countable;
Infinite, measurable
Level of measurements of a variable:
Nominal < Ordinal < Interval < Ratio
Nominal vs Ordinal
Both qualitative
Categorical;
Ordered
Interval vs Ratio
Both quantitative
Specifies distance between interval (+,-);
A value of zero means absence (×,÷)
Sources of data
Primary vs secondary sources of data
Firsthand account, authoritative;
Analysis/interpretation of primary sources, persuasive