MATH 170E / YIN, JUN

Introduction to Probability and Statistics 1: Probability

How MATH 170E grades when YIN, JUN teaches it. MATH 170E, every instructor YIN, JUN, every course

Grades, this instructor

3.22adjusted historical GPA, this instructor

80 letter grades across 1 term, Winter 2023. The course pools every instructor at 3.23 over 2,432 letter grades.

Raw average: 3.22; The mean of this instructor's recorded letter grades in this course.
In the A range: 51.2%; A+, A and A minus out of 80 letter grades.
D, F or W: 6.3%; D-range and F grades plus withdrawals, divided by letter grades plus withdrawals.
Taken pass/no pass: 0%; No pass/no-pass outcomes are recorded.

Grade distribution

A+8 / 10%
A16 / 20%
A-17 / 21.3%
B+10 / 12.5%
B9 / 11.3%
B-5 / 6.3%
C+3 / 3.8%
C3 / 3.8%
C-4 / 5%
D+4 / 5%
D0 / 0%
D-0 / 0%
F1 / 1.3%
I2 of 82

Percentages are of the 80 letter grades. Grey bars are non-letter outcomes: incompletes (I). They are excluded from GPA.

Term by term

Raw averages for the terms in this record. A missing term does not establish that this instructor did not teach it. Summer sessions are included when present.

Dashed line: course average across all instructors, 3.23.

One recorded instructorCo-taught, grades shared

Winter 20233.2280 letter grades.

Is one term a guide to the next?

Across the measured corpus, the same course and instructor's term averages were strongly correlated, including terms several years apart. That is why the adjustment does not weight recent terms more heavily. This is a dataset-wide pattern, not a promise about this instructor's next class.

Teaching it in Fall 2026

Section

Lec 3

MWF 3:00pm-3:50pm

Seats

Closed

80 of 80 · 4 over enrolled

Seat risk

high risk

An estimate, separate from the seat reading.

Read October 16, 2026 at 4:42 PM PDT. Seat counts can change before you enroll.

Every linked section (2)

Dis 3AT 3:00pm-3:50pmclosed: 40 of 40 · 2 over enrolled

Dis 3BR 3:00pm-3:50pmclosed: 40 of 40 · 2 over enrolled

Every MATH 170E section and instructor

Reading these figures

Raw is the mean of the recorded letter grades. The adjusted historical GPA pulls an instructor's average toward the course's adjusted average, which itself uses a department prior. It is a comparison aid, not a calibrated prediction or a student rating. Small samples carry more uncertainty. All recorded instructor roles are included, and a section is counted only once for this instructor. Grades cannot establish workload or explain why outcomes differed.

What students say

dibs measures outcomes. For students' experiences of the class, BruinWalk has reviews.

Reviews for YIN, JUN in MATH 170E