Statistics & Probability Review 2

A bag has 5 red marbles, 3 blue and 2 yellow. What is the theoretical probability of pulling a red?

• 5/10

• 3/10

• 1/5

• 1/2

Find the mode of these numbers:

2,3,6,4,3,2,6,3,2,1,2

• 3

• 6

• 4

• 2

Which restaurant has a lower median wait time?

• Lucy's Steakhouse

• Gary's Grill

• They are the same

What data value is the lower quartile (Q1)?

• 64

• 62

• 60

• 58

The possible results of an action

• odds
• experimental probability
• outcome
• probability

The box plot shows information about the number of sit-ups Marquis and Frank did each day for a month.

How much greater is the interquartile range for sit-ups done by Frank than Marquis?

• 30

• 20

• 10

• 40

A type of probability that describes what actually happens for an event.

• theoretical probability
• experimental probability
• outcome
• odds

A representative sample of 50 seventh-grade students is surveyed. Each student is asked what flavor ice cream he or she prefers. The table shows the responses.

Select all of the statements that are valid based on the results.

• Of the seventh-grade students surveyed, 25% prefer chocolate.

• In a group of 200 seventh-grade students, it is expected that 100 would prefer chocolate.

• There are 2.5 times as many seventh-grade students who prefer chocolate as prefer vanilla.

• In a group of seventh-grade students where 20 prefer mint, it is expected that 21 would prefer strawberry.

A type of probability that describes what should happen for an event.

• experimental probability
• theoretical probability
• odds
• probability

Mike's and Tim's scores in different subjects are given in the table.

Which of the following statements are true? Select all that apply.

• The mean of Mike's scores is less than the mean of Tim's scores.

• The range of Mike's scores is less than the range of Tim's scores.

• The median of Mike's scores is less than the median of Tim's scores.

• The interquartile range of Mike's scores is less than the interquartile range of Tim's scores.