Population Sampling Inferences

Which size random sample is likely to provide the most trustworthy results?

• 5

• 10

• 30

• There is no difference.

Trinity asked a random sample of 50 students at her school if they brought lunch from home today. If 30 answered “yes,” about what percent of students at Trinity’s school brought lunch from home today?

• 15%

• 30%

• 50%

• 60%

Part of the population

• Bias

• Sample

• Population

• Inference

A complete set of items being studied

• Subject

• Sample

• Population

• Bias

A judgement that is made by interpreting data

• Inference

• Sample

• Variability

• Comparative Inference

When each member of a population has an equal choice of being chosen the method is called what?

• Random Sample

• Convenience Sample

• Systematic Sample

• Subject

What is the sample?

• All students at Commodore

• All students in section 702

• The 10 students Mr. Cardarella picks

• All students in 7th grade

_______ is a part of a group being surveyed.

• Sample

• Population

• Random Sample

• Quartile

_______ is the entire group of objects or individuals considered for a survey.

• Sample

• Population

• Random Sample

• Quartile

A toy store owner tracking how much kids spend each month on toys. Which choice best represents a population?

• All of the kids who buy toys.

• 227 wealthy kids.

• 228 boys age 7 - 15

• 235 kids from age 10 to 15.