University of Toronto Mississauga
STA256H5
Probability and Statistics I
What was the average?
B-
2.57 GPA across 3 observed terms. Most recent: Summer 2023.
How is it graded?
40% final
From the Fall 2026 syllabus. 9 graded components.
How confident is this?
Med
A small number of terms, so read it as a range. The most recent observation is several years old.
From the calendar
Official source · University of Toronto MississaugaThis course covers probability and its role in statistical modeling, including random variables, distribution functions, multivariate distributions, and the central limit theorem.
- Exclusions
- ECO227Y1ECO227Y5STA257H1STAB52H3
- Contact hours
- 39 lecture · 12 tutorial
- Total scheduled hours for the course, not per week.
What people actually got
Last observed Summer 20233 terms observed
This is a student-contributed aggregate, not an official University of Toronto record. It is also not a measure of how hard the course is — a course average moves with who enrols in it, not only with the material.
The newest observation is from Summer 2023. Instructors, weighting and exam format may all have changed since — treat this as history, not a forecast.
Per-term figures stay hidden until each term clears five contributors. 3 observations can support one honest number; they cannot support 3.
Where the marks come from
Fall 2026 syllabus40% of the grade is decided in the final alone. Steady coursework cannot carry this course on its own.
Extracted from a published Fall 2026 syllabus — verified against the university's own document. Components that could not be labelled are shown unresolved rather than folded into a neighbouring category.
- lowest 1 quiz(s) dropped
How well we know this course
2018–2025Pyko’s archive holds 16 documents for STA256H5, across 5 years between 2018 and 2025.
- 4
- Final exams
- 8
- Problem sets
- 2
- Tutorial material
- 2
- Syllabi
Counts, not a library. Pyko does not host or distribute course files, and this page is not an offer to supply one — the archive is what lets these pages describe how a course is assessed.
What we don’t have yet
Source ledger
Report an error →| Claim | Source | Captured | Status |
|---|---|---|---|
| Course description, prerequisites, exclusions, contact hours | University of Toronto Mississauga | 2026-07-25 | public fact |
| Historical average across 3 terms | Student contributions, consented | 2026-07-25 | user contributed aggregate |
| 16 archived documents, 2018-2025 | Pyko archive | 2026-07-25 | index only |
| Grading structure, description and credit weight from the official Fall 2026 syllabus (instructor: O. Jazi) | Official Fall 2026 course syllabus (University of Toronto Mississauga) | 2026-09-05 | official syllabus |
Page last verified 2026-09-05. A claim whose source moves is withdrawn before it goes stale.
What this opens up
55 courses list STA256H5 as a prerequisiteShowing 24 of the 28 that have a page here. The other 27 have no page yet. Listing a course here means it names STA256H5 among its prerequisites — often as one of several ways to satisfy the same requirement, so this is what STA256H5 makes available, not what it alone guarantees.
Around this course
You’ve read the average. Now use it.
Add STA256H5 and the Fall 2026 weighting loads with it — Pyko tracks what you've earned and solves for what the final has to be.
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