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MAT152 - Ch 1 Notes
Question | Answer |
---|---|
Define Statistics | The science of collecting, organizing, summarizing, and analyzing information to draw conclusions or answer questions |
Define Data | Information used to draw a conclusion or make a decision |
Define Population | The entire group of individuals to be studied |
Define Individual | A person or object that is a member of the population being studied |
Define Sample | A subset of the population that is being studied |
What is a statistic? | A numerical summary based on a sample |
What is descriptive statistics? | Describes data through numerical summaries, tables, and graphs |
What is inferential statistics? | Uses methods that take results from a sample, extends them to the population, and measures the reliability of the result |
Define Parameter | A numerical summary of a population |
Describe the Process of Statistics | 1) Identify the research objective 2) Collect the data needed to answer any questions 3) Describe the data 4) Perform Inference |
Define Variables | The characteristics of the individuals within the population |
What are Qualitative variables? | Allow for classification of individuals based on some attribute or characteristic |
What are Quantitative variables? | Provide numerical measures of individuals that can be added or subtracted to provide meaningful results |
What is a discrete variable? | A quantitative variable that has a countable number of possible values |
What is a continuous variable? | A quantitative variable that has an infinite number of possible values it can take on and can be measured to any desired level of accuracy |