Class Notes (807,075)
Statistics (474)
STAT 231 (84)
Lecture 3

# week 3- Lecture 1.pdf

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School
University of Waterloo
Department
Statistics
Course
STAT 231
Professor
Matthias Schonlau
Semester
Fall

Description
PPDAC in brief Problem – clear statement of the problem of interest Plan – specify the procedure(s) for collecting the data D ata – collect the data according to the Plan Analysis – summarize and analyse the data in order to answer the problem of interest Conclusion – draw conclusions based on what is learned in the Analysis 32 Problem: • Statements-about-Populations-of- individuals- • Individual-members-of-the-population=- units- • Characteristic-of-a-unit-=-a-variate- • Functions-defined-on-the-units-=-attribute- Aspect of a Problem: • Descriptive:-The-answer-involves-learning- about-some-attribute-about-the- population.- • Causative:-involves-the-existence-of-a- causal-link-between-variates-(or-nonT existence)- (i) Response-variates:- (ii) Explanatory-variates- Changes in the explanatory variates “cause” a change in the response variates • Predictive:-involves-predicting-value-of-a- response-variate-for-a-given-unit- • Examples:- • Correlation-≠-Causation- Units • The&target&population:-set-of-units-we-set- out-to-investigate- • The&study&population
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