Population vs. Sample
The entire group you want information about
What is a population?
Every member has an equal chance of being selected
What is a random sample?
In a sample of 10 students, 6 prefer blue and 4 prefer red. What percent prefer blue?
What is 60%?
In a sample of 10 students, 4 prefer pizza. About how many out of 50 students would prefer pizza?
What is 20 students?
This is our school mascot.
What is Panther?
A smaller group chosen from a population
What is a sample?
A sample that favors certain outcomes
What is a biased sample?
In a sample of 20 students, 9 prefer red. What percent prefer red?
What is 45%?
A survey shows 3 out of 5 students like math. About how many out of 100 students would like math?
What is 60 students?
This is how many minutes long our class period is.
Surveying all students in a school is studying the...
What is the population?
Asking only athletes about favorite sports is…
What is biased?
The population is 45% red and 55% blue. A sample shows 60% prefer blue. Is this ABOVE or BELOW the population ratio for blue?
What is above?
In a random sample, 12 out of 20 students prefer online homework. About how many out of 200 students would prefer it?
What is 120 students?
This video game features building, mining, and surviving in a block world.
What is Minecraft?
Surveying 25 students from a school of 500 is studying the...
What is a sample?
Pulling names from a hat is an example of…
What is a random sample?
The population is 45% red and 55% blue. In a sample of 20 students, 8 prefer blue.
First find the percent, then compare to the population.
What is 40%, and it is below the population ratio?
A sample shows 25% of students like reading. About how many out of 80 students would like reading?
What is 20 students?
This is the most popular fast food restaurant in the U.S. (by sales).
Identify the population: A teacher surveys 10 students about homework time
What is all students in the class (or school)?
Surveying people at a pizza shop about favorite food is…
What is biased?
The population is 45% red and 55% blue.
Sample 1: 70% blue
Sample 2: 50% blue
Which sample is closer to the population ratio?
What is Sample 2?
In a sample of 50 students, 35 like school lunch. Predict how many out of 200 students would like school lunch.
What is 140 students?
Grace and Dylan played 14 games in their pickleball league. This is how many games they won.
What is 14 games?