General Practice · Mock test
Random Variables and Expected Value: Practice Paper
A timed paper: 15 questions in 20 minutes, from easy to hard, on probability tables, expected value, variance and standard deviation.
Statistics & Data ScienceMathematicsHigh School (9–10)High School (11–12)UndergraduateGeneral
- questions
- 15
- minutes
- 20
- marks
- 15
- right / wrong
- +1 / 0
The clock starts when you press Begin, after the instructions.
Exam pattern
| Part | Questions | Marks |
|---|---|---|
| All questions | 15 | 15 |
Marking
- Right answer: +1
- Wrong answer: 0, nothing taken away
- Left blank: 0
Time
20 minutes on one clock, from when you begin.
Syllabus covered
One chapter
- Random Variables and Distributions15
Before you start
- It runs like an online exam: one question at a time, with a palette showing what you have answered, skipped or marked for review.
- The clock starts when you press Begin the test, after you have read the instructions, and keeps running even if you reload or leave. At zero, your saved answers are submitted.
- The test opens in full screen where your device allows it. Leaving full screen or switching to another tab or app is recorded with your attempt, and whoever set the test can see it. Your own count shows at the top of the test.
- Your score, the answers and the explanations show when you finish, with where you stand among everyone who has taken it.