3.1 - 3.2 Planning a Study

Complete the definition:

A _________ consists of all subjects (human or otherwise) that are being studied

• Statistics

• Number

• People

• Population

• Pueblo

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Complete the definition:

A _______ is a subset of a population

• sample

• sampel

• people

• statistics

• group

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Population or Sample?

A survey of 1353 American households found that 18% of the households own a computer.

• Population

• Sample

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Population or Sample?

The average weight of every person on a patient list is 172 lbs.

• Population

• Sample

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Population or Sample?

A factory overseer selects 40 threaded rods at random from those produced that week at the factory, then she tests their tensile strength.

• Population

• Sample

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Population or Sample?

A quality control engineer is curious about the thickness of paint on a car at her factory. She randomly selects 30 points on the car and measures the paint thickness at each of those points.

• Population

• Sample

Tags

CCSS.HSS.IC.B.3

Population or Sample?

All of the teachers in a school are surveyed on their meeting time preferences.

• Population

• Sample

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Population or Sample?

Every fifth customer exiting a restaurant is surveyed on how well they liked the food.

• Population

• Sample

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

One group of subjects was given an herbal supplement and another group was given a placebo. After one year, the number of illnesses each group had was compared.

• Observational Study

• Experiment

Tags

CCSS.HSS.IC.B.3

A researcher stood at a school parking lot entrance to see if the color of a car is related to the driver not wearing a seatbelt.

• Observational Study

• Experiment

Tags

CCSS.HSS.IC.B.3