Population and Samples Quiz

Identify the population. Determine whether each sample is biased or unbiased sample.

Hanny wants to know how most people in his neighborhood get to work. He surveys 100 people getting off the bus at a bus stop near his house.

• biased

• unbiased

Identify the population. Determine whether each sample is biased or unbiased sample. Explain your reasoning.

Christyana want to know the favorite ice cream flavor of the students in the 7th grade. She surveys 150 7th graders chosen at random from a list of the students.

• biased

• unbiased

Use the information from each sample to make inferences for the given questions.

Riley selects 30 cartons of eggs and finds 4 cartons have cracked eggs. If she has 105 cartons of eggs, how many cartons can she expect to have cracked eggs in them?

(a)  

On Monday, a baker made 500 loaves of bread and 50 were burned. The baker uses a random sample to simulate 10 loaves to inspect on Tuesday. The integers 1 to 50 represent burned loaves.

351 207 148 428 272 121 47 205 56 4

How many integers in the sample are between 1 and 50?

• 1

• 2

• 4

On Monday, a baker made 500 loaves of bread and 50 were burned. The baker uses a random sample to simulate 10 loaves to inspect on Tuesday. The integers 1 to 50 represent burned loaves.

351 207 148 428 272 121 47 205 56 4

What percentage of loaves are predicted to turn out burned on Tuesday?

• 10%

• 20%

• 80%

What is the Minimum Value?

(a)  

What is the Maximum Value?

(a)  

What is the Median?

(a)  

What is the Lower Quartile Median?

(a)  

What is the Upper Quartile Median?

(a)