Stat 305 Exam Study Guide Solutions
Chaotic System - ANSWER✔✔-a system which minuscule differences can causes entirely different
results.
Quantitative Theory - ANSWER✔✔-Number theory
data - ANSWER✔✔-information we can record
Engineering Statistics 3 parts are... - ANSWER✔✔-Collect data
summarize data
draw formal inferences and conclusions off data
Observational Study - ANSWER✔✔-you don't effect the study, just happens naturally
Experimental Study - ANSWER✔✔-You effect the study by manipulating variables to regulate the study
Enumerative Study - ANSWER✔✔-A study on a certain group of things or people and only focus on those
things
Population - ANSWER✔✔-the entire group that is being represented through a sample during a study
Sample - ANSWER✔✔-group that is actually tested and data collected during a study, represents
population.
Analytical study - ANSWER✔✔-phenomeon of one point in space and time is studied. Study should
represent all time and area of the study.
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(most typical of engineering)
Conceptual populations - ANSWER✔✔-Could one day be true, not concrete
Qualitative/Categorical data - ANSWER✔✔-descriptive data. ex eye color
Quantitative/Numerical data - ANSWER✔✔-expressed through numbers
continuous variables - ANSWER✔✔-no concrete end point.
discrete variable - ANSWER✔✔-Numbers actually countable
Univariate data - ANSWER✔✔-single characteristic for each sample item observed
Multivariate data - ANSWER✔✔-Multiple observations for multiple characters of sampled item
Bivariate data - ANSWER✔✔-2 Characteristics are observed for each item
Repeated measured data - ANSWER✔✔-Same characteristic multiple times tested.
paired data - ANSWER✔✔-repeated measure data compared to past data.
data set - ANSWER✔✔-Collected data
data table/flat file - ANSWER✔✔-Where data is stored
Wide format - ANSWER✔✔-each sampling unit on its own row
Long format - ANSWER✔✔-multiple sampling units in 1 row.
keys - ANSWER✔✔-unique set of identifiers
Fatorial Studies - ANSWER✔✔-scenarios with many process variables are identified as important and are
collected under different settings
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