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Université Laval · Québec · preuniversity / preparatory year
Université Laval STT-0150 — Preparatory Statistics
Review summaries, normal tables, sampling, introductory estimation/tests and chi-square counts. Laval explicitly marks STT-0150 as preuniversity and non-contributory to a program.
44 original question families · 132 parameter instances
Practise this course →Course alignment and coverage
Official Laval activity description, level/credit-contribution note and published Fall 2026 information checked on 25 October 2026. A full current section plan and weekly order have not been verified.
Across this collection: 140 distinct original families and 420 parameter instances. Courses share topic banks; translations and shared mappings are not extra questions.
Supported learning objectives
Descriptive statistics
Calculate means, medians and weighted summaries.
Variance and standard deviation
Distinguish sample and population denominators and scale changes.
Probability
Use complements, independence and conditional probability.
Distributions
Use binomial and normal models under stated assumptions.
Sampling and standard error
Calculate standard errors and sample-size effects.
Confidence intervals for a mean
Calculate known-sigma z intervals; critical values are supplied.
Hypothesis tests for a mean
Calculate a known-sigma z statistic, p-value decision or critical boundary.
Proportions
Estimate a proportion and calculate a standard error or z interval.
Correlation and regression
Use a supplied least-squares line and interpret residuals and r².
Chi-square counts
Compute a simple goodness-of-fit statistic, an expected cell, table degrees of freedom and a decision from a supplied p-value.
Normal areas and quantiles
Use supplied rounded normal tables for complements, central areas, standardization and a percentile.
What is not covered
Short numerical foundations only; complete data-collection, classification, graphical analysis and full inferential procedures remain outside this bank. Known-sigma z cases are explicitly simplified. This course is not the degree-level STT-1000.
An original worked example
Find the mean of 2, 4, 6, 8.
Worked solution
Answer: 5
- The total is 20.
- Mean=20/4=5.
Official course sources
Independent, original, free self-study practice. Not affiliated with or endorsed by this university; these are not official exam questions. Topic alignment does not establish transfer credit, a current section’s weekly syllabus, full course coverage or a grade prediction. Follow your instructor’s rules and use official course materials for assessed work. No live AI chat or paid access is required.