2022 Math Final Review

1. A sample in which every person, object, or event has an equal chance of being selected.

• A. Random sample.
• B. Biased sample.

6. Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?

• A. Thirty randomly selected students from her school
• B. Thirty students who are rarely tardy
• thirty of her friends

What is the probability of choosing a blue marble?

• Certain

• Likely

• Unlikely

• Impossible

What is the probability of choosing a green marble?

• Certain

• Likely

• Unlikely

• Impossible

What is the probability of choosing a black marble?

• Certain

• Likely

• Unlikely

• Impossible

What is the probability of choosing a black marble?

• Certain

• Likely

• Unlikely

• Impossible

Probabilities are always between...

• 0 & 1
• 0 & 100
• 1 & 100
• 2 & 1

The Probability Line above shows all possible probabilities, from 0% to 100%.

What is the probability shown with the red arrow?

• 25%

• 40%

• 60%

• 75%

Jeff has four grades from tests and IXL. They are all weighted equally. If Jeff's grades are 100, 96, 96, and 100, what Jeff's current average grade?

• 96

• 97

• 98

• 100

Find the median:
3, 5, 7, 4, 3, 1

• 3 and 4
• There isn't one
• 3.5
• 3