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EC ENGR 131A · Lec 1

Probability and Statistics

Fall 2026Roychowdhury, V.P.4 units

Seats, time, final and grades

Seats

Closed.

70 of 70 enrolled, lecture and all discussions summed.

Meets

MW 6:00pm-7:50pm

Lecture only. You also attend a discussion, listed below.

Final

Mon 7 Dec, 6:30pm to 9:30pm

One exam for the whole class, Los Angeles time.

Read 3 days ago.

Grades

3.43
predicted, this instructor · 346 grades

346 letter grades, Roychowdhury, V.P..

Read 51 minutes ago. This is a recent reading, not a live seat count.

dibs has seen this section open 3 times since 17 August. The last time was 29 August. 3 of those were readings where the capacity figure moved and the enrolled count did not, so dibs could not tell whether a seat existed and did not send an alert.

Enroll on the registrar (opens in a new tab) Sign in to watch for an opening

Watching is the one thing here that needs an account, because an alert needs somewhere to go. Everything else on this page works signed out.

Put this class on a board

A board is one quarter you are drafting, so it needs an account to live in. Signing in brings you straight back to this page, with this class still in front of you.

Before you can enroll

Registrar's Restrictions cell, read 3 days ago: "Undergraduate Computer Science, Computer Science and Engineering, Computer Engineering, Electrical Engineering or Computational Biology Majors and Data Science Engineering Minor".

Tell dibs what you have already taken and this line will say which of these you have. Your list.

From the registrar

Students who enroll in upper-division courses offered by the Samueli School without completing the requisites are subject to disenrollment after the second class meeting. If necessary, consult with an OASA counselor through MyUCLA Message Center. Discussion section attendance is optional.

Restrictions read 3 days ago. dibs re-reads these slowly because they rarely change; watch the section and it moves to every 6 hours.

Discussions

You enroll in the discussion, not the lecture, so the seat figure above is the sum across all of them and can read open while every discussion you could actually join is full.

2 discussions, none open. There is no waitlist either, so the only way in is somebody dropping the lecture.

No discussion is open. Whatever the lecture reads, there is currently nothing here to enroll in.
  • Dis 1A

    F 12:00pm-12:50pm

    Sharma, K.

    Closed.

  • Dis 1B

    F 1:00pm-1:50pm

    No instructors

    Cancelled.

  • Dis 1C

    F 2:00pm-2:50pm

    Sharma, K.

    Closed.

When it meets

Mon
Tue
Wed
Thu
Fri
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm

Meets: MW 6:00pm-7:50pm

Boelter Hall 5249

Grades

3.43
predicted, this instructor · 346 grades

2 other people have taught EC ENGR 131A in the grade record: DOLECEK, LARA at 3.48 over 674 grades and WESEL, RICHARD D at 3.44 over 78 grades.

A range
58%
P/NP
-
letter grade only
D/F/W
0.9%

Full grade history for EC ENGR 131A

What students say

dibs measures outcomes: grades, seats, how fast it fills. For what the class is actually like to sit in, BruinWalk has the reviews.

Workload, average. 2.7 of 5 for Vwani Roychowdhury, where 5 is lightest. Read 30 days ago.

What the work looks like

  • 2 exams, said by 13 reviewers
  • 3 quizzes, said by 4 reviewers
  • Problem sets mentioned, no number given, said by 14 reviewers
  • 1 project, said by 7 reviewers
  • Group works mentioned, no number given, said by 1 reviewer

Read from 52 reviews 16 days ago. dibs counts only what a review actually states, so a kind of work nobody mentioned is absent rather than zero.

EC ENGR 131A reviews for Vwani Roychowdhury Reviews for all professors of EC ENGR 131A

Will it still be here

high risk chance of closing before your enrollment pass.

Final enrollment per term from four years of grade data. Summer excluded: different population, different pass structure.

  • 5721F
  • 7622W
  • 4522F
  • 12823W
  • 6523F
  • 13624W
  • 7424F
  • 16925W
  • 11025F
Enrollment by term: 21F 57, 22W 76, 22F 45, 23W 128, 23F 65, 24W 136, 24F 74, 25W 169, 25F 110

Peak 169 · most recent 25F at 110

Seats over time

Filled by 7 over about 2 months

3 times reopened
70 of 70 · no seats left in its discussions
17 Aug 15:079 Sep 06:341 Oct 22:02
dibs read 168 of the 716 hours its hourly record covers, 23%, and did not look in 548. dibs had no hourly record before 2 Sep, which is the other 372 of 1088 plotted.70 of 70 enrolled at the newest reading, 51 minutes ago, and no seats left in its discussions. Seats from 17 Aug 15:07 to 1 Oct 22:02, 63 to 70. dibs read 168 of the 716 hours its hourly record here covers, 23%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 548 hours dibs was keeping a record and did not reach this section. Nothing before 2 September at 03:00, where this section's record starts, has a read either way, which is 372 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

A dot is a reading where something moved: the seat count, the status, or the waitlist. Flat between dots joins recorded counts; changes between reads may be missed. The line starts when dibs first saw this section rather than reaching back before it existed. The last one is the last time dibs read this section, moved or not: 51 minutes ago.

Show the readings (19)
Recorded Enrolled Capacity Status Waitlist Hours read
1 Oct 22:02 70 70 closed - 114 of 405
15 Sep 02:22 70 70 closed - 4 of 12
14 Sep 15:52 65 70 open - 2 of 4
14 Sep 12:22 66 70 open - 26 of 109
10 Sep 00:40 65 70 open - 22 of 170
2 Sep 23:40 62 70 open - 5 of 120, 99 no hourly record
29 Aug 00:40 61 70 open - no hourly record
28 Aug 21:40 61 0 closed by the department - no hourly record
28 Aug 19:40 61 70 open - no hourly record
28 Aug 17:40 61 0 closed by the department - no hourly record
28 Aug 16:40 61 70 open - no hourly record
28 Aug 01:40 61 0 closed by the department - no hourly record
27 Aug 22:40 62 0 closed by the department - no hourly record
27 Aug 21:40 61 0 closed by the department - no hourly record
27 Aug 20:40 62 0 closed by the department - no hourly record
27 Aug 19:40 61 0 closed by the department - no hourly record
27 Aug 10:40 62 0 closed by the department - no hourly record
23 Aug 22:40 62 90 open - no hourly record
17 Aug 15:07 63 90 open - -
How readings and alerts work

A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.

Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.

The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.

Class chat

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