Population and Sample Concepts

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

• Sample
• Population
• Random Sample
• Quartile

Tags

CCSS.7.SP.A.1

What would be the population in this example?
The owner of the mall randomly selected 30 customers to ask the shoppers about the products they prefer.

• the surveyors
• all shoppers in the mall
• the 30 shoppers who were asked their preferences

What would be the population in this example?
The owner of the mall randomly selected 30 customers to ask the shoppers about the products they prefer.

• the surveyors
• all shoppers in the mall
• the 30 shoppers who were asked their preferences

The part of the population being studied

• population
• sample
• random

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

A school principal wants to see which subject the 695 students in his school liked best. Which choice BEST represents a representative sample?

• All girls in the school

• All students who have an A in Social Studies

• All students who are failing science

• 1 class from each grade level

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

To try to predict the outcome of the vote for the school board election school board election​, a town manager used random numbers to pick 100 registered voters. She then called these voters and asked how they planned to vote. Is the sample taken in this problem representative of the population?

• No, because it does not contain the same number of subjects as the population.

• ​Yes, because it is a systematic sample.

• ​Yes, because it is a simple random sample.

• ​Yes, because it contains the same number of subjects as the population.

Without looking, Christine took 2 flash cards out of her box of flash cards.  Is this a random sample of the flash cards?

• yes
• no

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

Patrick polled the first 27 people to attend the WMS band concert.  Is this sample of the concert attendees likely to be representative?

• yes
• no

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

Population or Sample?

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

• Population

• Sample

Student Council is taking a survey to find the the average shoe size of middle school students. Which is the best sample?

• surveying 20 teachers and 10 students

• Surveying 20 students from each grade level

• Surveying all the students at the school

• Surveying 20 kids from 5th grade and 20 kids from 6th grade

• Surveying 30 8th grade students that do not wear shoes to school.