Estimating Probabilities by Collecting Data

What is the estimate for the probability of selecting a brown crayon from the bag?

Each of the 20 students in Mr. Anderson's class flipped a coin ten times and recorded how many times it came out heads.  Use this data to estimate the probability of observing 4, 5, or 6 heads in ten tosses of the coin.

• 4/20

• 5/20

• 12/20

• 3/20

A 7th grade student surveyed 25 students at her school. She asked them how many hours a week they spend playing a sport or game outdoors. What is the probability of the students answering 3 hours?

The table shows data from a survey asking people what type of writing instrument they like. P(Black Pens) = ?

• 30%

• 70%

• 75%

• 44.8%

A survey asked 600 people for their favorite genre of book. The table shows the data. P(Romance) = ?

• 30.6%

• 22%

• 28.5%

• 25%

Based on the bar graph, what is the probability that a dog is a person's favorite pet?

Based on the bar graph, what is the probability that a gerbil is a person's favorite pet?

A random selection will be made from a bag containing different colored disks. Of the 25 disks in the bag, 5 are yellow. It is ___________ that a yellow disk will be randomly selected from the bag.

• Unlikely

• Likely

• Impossible

• Certain

• Equally Likely

______ can only take certain values.

• continuous data

• discrete data

Which method of collection would you use to collect this data ?
How often a slice of buttered bread lands 'butter down' when it is dropped 50 times?

• experiment

• observation 

• survey