Ch 1: Intro to Statistics Questions and Answers 2023
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Course
Statistics
Institution
Statistics
Ch 1: Intro to Statistics Questions and Answers 2023
Data
collections of observations (such as measurements, genders, survey responses)
Statistics
is the science of planning studies and experiments, obtaining data, and then organizing, summarizing, presenting, analyzing, interpreting, and...
Ch 1: Intro to Statistics Questions and Answers 2023
Data - answer collections of observations (such as measurements, genders, survey responses)
Statistics - answer is the science of planning studies and experiments, obtaining data, and then organizing, summarizing, presenting, analyzing, interpreting, and drawing conclusions based on the data
Population - answer the complete collection of all individuals (scores, people, measurements, and so on) to be studied; the collection is complete in the sense that it includes all of the individuals to be studied
Census - answer Collection of data from every
member of a population
Sample - answer Subcollection of members
selected from a population
Sample data must be - answer random
Context - answer What do the values represent? Where did the data come from? Why were they collected?
An understanding of the context will directly affect the statistical procedure used.
Source of data - answer Is the source objective? Is the source biased? Is there some
incentive to distort or spin results to support some self- serving position? Is there something to gain or lose by distorting results?
Be vigilant and skeptical of studies from sources that may be biased.
Sampling Method - answer Does the method chosen greatly influence the validity of the conclusion? Voluntary response (or self-selected) samples often have bias (those with special interest are more likely to participate). These samples' results are not necessarily valid. Other methods are more likely to produce good results.
Statistical Significance - answer If the likelihood of getting the results is so small, then the results are
Parameter - answer a numerical measurement
describing some characteristic of a population.
Statistic - answer a numerical measurement describing
some characteristic of a sample.
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