A box-and-whisker plot shows class sizes with a median of 28 students. Which statement must be true?

Half of the classes are larger than 23.

Grade 8 Math · Probability and Statistics

Virginia SOL 8.PS.1

Virginia SOL 8.PS.1 is part of the Probability and Statistics strand in Grade 8 Math (Math). Under this Standards of Learning objective, students determine the probability of independent and dependent events. Below is what 8.PS.1 covers in plain language, the specific skills it is assessed on, the key concepts to review, and how to practice 8.PS.1 for the Virginia SOL test.

Practice 8.PS.1 All Grade 8 Math standards

What SOL 8.PS.1 means

Determine the probability of independent and dependent events.

Practice Grade 8 Math SOL questions

Free Grade 8 Math questions from official Virginia Department of Education released SOL tests — good practice while you work on 8.PS.1 and the rest of the course. Pick an answer to check it instantly, or open “Show answer” to review.

1. The table shows World Cup records: Argentina: 57 points Brazil: 99 points England: 48 points Italy: 74 points West Germany: 93 points What is the mean number of points?
Show answer
Answer: C — 74.2
2. A box-and-whisker plot shows class sizes with a median of 28 students. Which statement must be true?
Show answer
Answer: J — The median class size is 28.
3. Hilary has $9 less than Barbara. Together they have $21. If x represents Barbara’s money, which equation models this situation?
Show answer
Answer: B — (x − 9) + x = 21
4. In an auditorium, each row has 2 more seats than the row in front. The first row has 23 seats. How many seats are in the 10th row?
Show answer
Answer: H — 41

→ Take the full free Grade 8 Math SOL practice test

Skills you’ll practice for 8.PS.1

Determine whether two events are independent or dependent and explain how replacement impacts the probability.
Compare and contrast the probability of independent and dependent events.
Determine the probability of two independent events.
Determine the probability of two dependent events.

Key concepts covered by 8.PS.1

independent events
dependent events
replacement
probability
probability comparison

How to study and practice SOL 8.PS.1

Start with a quick diagnostic to see whether 8.PS.1 is already solid, then work each skill above with guided notes, flashcards, and SOL-style practice questions. For official released items, see our Virginia SOL practice tests guide and how to study for the SOL test.

→ Take the free Grade 8 Math SOL practice test

8.PS.2 — Apply the data cycle with a focus on boxplots.
8.PS.3 — Apply the data cycle with a focus on scatterplots.

Frequently asked questions about SOL 8.PS.1

What is Virginia SOL 8.PS.1?

SOL 8.PS.1 is a Grade 8 Math Standard of Learning in the Probability and Statistics strand. It expects students to determine the probability of independent and dependent events.

What skills does SOL 8.PS.1 cover?

SOL 8.PS.1 is assessed on 4 skills: determine whether two events are independent or dependent and explain how replacement impacts the probability; compare and contrast the probability of independent and dependent events; determine the probability of two independent events; determine the probability of two dependent events.

What strand of Grade 8 Math is SOL 8.PS.1 in?

SOL 8.PS.1 belongs to the Probability and Statistics reporting strand of the Grade 8 Math Virginia Standards of Learning.

How do I study and practice for SOL 8.PS.1?

Start with a diagnostic to see whether 8.PS.1 is already solid, then work the 4 skills above with guided notes, flashcards, and SOL-style practice questions. For official released items, see the Virginia SOL practice tests guide.