Probability Review 7th Grade

What is the probability of spinning green?

• 0
• 1/4
• 1/2
• 3/4

A bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is the probability of drawing a lemon?

• 3
• 1/10
• 3/10
• 30%

Find the experimental probability of spinning Letter Q.

• 15/15
• 3/10
• 3/50
• 7/10

If I flip a coin 10 times, how many times should I get heads?

• 1
• 10
• 3
• 5

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.6

Based on the chart, what is the experimental probability of pulling a green marble?

• 1/8
• 8/25
• 8/100
• 7/8

_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.

• Sample

• Population

• Random Sample

• Quartile

A recent survey of 800 seventh graders from across the state shows 4 out of 10 like to play paper football. How many students said they like to play paper football?

• 40 students
• 200 students 
• 320 students
• 8,000 students

Manny wants to know how many students at CTMS enjoy solving math problems. What is the best sampling method?

• ask for 20 volunteers to discuss whether they enjoy solving math problems
• ask the last 20 people to arrive at CTMS 
• Randomly ask 2 students in the hallway
• Ask every 20th student that walks into school

A high school has 1500 students.  In a random sample of 50 students, 32 own one or more pets.  Predict the number of students at the high school who own one or more pets.

• 480
• 960
• 48
• 96

Before a nation wide election, a polling place was trying to see who would win.

Which choice best represents a random sample?

• A selection of voters over age 50.

• A selection of male voters.

• A selection of voters of different ages.

• All of these.