Surveys, Experiments, and Observational Study's

Given the following scenario, state the population

Jimmy Cone wants to know the most popular ice cream flavor. They decided to record every 3rd person's flavor choice.

• All customers

• Every 3rd customer

• Ice Cream Flavor

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Given the following scenario, state the sample

Jimmy Cone wants to know the most popular ice cream flavor. They decided to record every 3rd person's flavor choice.

• All customers

• Every 3rd customer

• Ice Cream Flavor

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Is the following an example of a population or a sample?

Every 15th customer at Best Buy.

• Population

• Sample

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

A school randomly chose ten English teachers and asked them which type of juice their students would prefer. Which reason best shows why this sample is biased?

• The sample didn't include students.
• The sample is too small.
• The sample can only be accurate if each teacher is included in the sample

Tags

CCSS.RL.11-12.6

Which of the following is not a way to choose a random sample of 25?

• Assign numbers. Use a random number generator to choose 25
• Put names in a hat, mix them up and choose 25
• Assemble possible participants in a circle around a person who is blindfolded,  spin the person around 3 times and have them point at a person.  Do this 25 times.

Tags

CCSS.HSS.IC.B.3

Why do we randomly select our samples?

• for control
• reduce bias
• so we don't get the same answers from everyone
• to eliminate confounding results

Tags

CCSS.HSS.IC.B.3

7. A public library asked every 10th person who entered to name the type of book they were getting

• Biased
• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

To determine how often people eat out, every tenth person entering a Chinese restaurant is surveyed.

• Biased Sample

• Unbiased Sample

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

4. A company makes DVDs and randomly selects 25 from 1500 to test them to see if they work.

• Biased
• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

3.  A hospital wants to open a gym. They ask the night-shift ER staff when they would use the gym.

• Biased
• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1