Loading
by BlastRoom
Tell populations from samples and decide what survey results can support.
#us_grade_7_math
40 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.
The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
A principal surveys 90 of the 420 seventh graders about a dance. She wants seventh-grade opinions. Which group is the population?
A coach randomly asks 25 of 160 soccer players about practice times. Which group is the sample?
A city surveys 200 residents about adding bike lanes. It wants to know what all city residents think. Which group is the population?
A librarian asks 35 of 280 library members about new books. Which group is the sample?
A store surveys 120 shoppers about checkout speed. It wants opinions of all shoppers that week. Which group is the population?
A science teacher asks 18 of 72 seventh graders about a lab activity. Which group is the sample?
A park ranger surveys 50 visitors about trail signs. She wants information about all visitors this month. Which group is the population?
A cafeteria worker asks 40 of 300 students about soup choices. Which group is the sample?
A movie theater surveys 75 customers about ticket prices. It wants opinions from all customers on Saturday. Which group is the population?
A band director asks 20 of 95 band members about a concert date. Which group is the sample?
A website surveys 500 users about a new design. It wants to learn about all active users. Which group is the population?
A vet clinic asks 30 of 240 pet owners about appointment reminders. Which group is the sample?
A mayor surveys 400 households about trash pickup. She wants to know opinions of all households in town. Which group is the population?
A swim club asks 22 of 110 swimmers about lane times. Which group is the sample?
A museum surveys 40 of its 500 members about weekend hours. It wants all members' opinions. Which group is the population?
A principal asks 60 of 720 students about school announcements. Which group is the sample?
A random sample of 60 of 300 students finds 24 prefer online sign-ups. Estimate how many of all 300 students prefer online sign-ups.
A random sample of 45 of 900 commuters finds 15 bike to work. Estimate how many of all 900 commuters bike to work.
A random sample of 80 of 400 students finds 52 choose art club. Estimate how many of all 400 students would choose art club.
A random sample of 50 of 1,000 families finds 8 own an electric car. Estimate how many of all 1,000 families own one.
A random sample of 30 of 150 library books finds 12 are mysteries. Estimate how many of all 150 books are mysteries.
A random sample of 70 of 560 voters finds 21 favor a new park. Estimate how many of all 560 voters favor it.
A random sample of 90 of 450 athletes finds 36 prefer morning practice. Estimate how many of all 450 athletes prefer morning practice.
A random sample of 40 of 200 plants finds 6 have blooms. Estimate how many of all 200 plants have blooms.
A random sample of 75 of 600 moviegoers finds 30 buy popcorn. Estimate how many of all 600 moviegoers buy popcorn.
A random sample of 64 of 320 households finds 16 compost food scraps. Estimate how many of all 320 households compost food scraps.
A random sample of 100 of 1,200 students finds 35 ride the bus. Estimate how many of all 1,200 students ride the bus.
A random sample of 48 of 240 club members finds 18 want T-shirts. Estimate how many of all 240 members want T-shirts.
A random sample of 55 of 550 employees finds 11 work remotely. Estimate how many of all 550 employees work remotely.
A random sample of 36 of 180 apartments finds 20 have balconies. Estimate how many of all 180 apartments have balconies.
A cafeteria manager surveys 80 students buying school lunch about new meals. Whose menu preferences can this survey best describe?
A coach surveys only basketball team members about gym music. Whose music preferences can the survey best represent?
An online poll asks school website visitors about homework load. Whose opinions can the poll best support?
A pet store surveys customers about building a city dog park. Whose opinions can this sample best describe?
A teacher asks the first 10 students who arrive about school start time. Whose opinions can this survey best describe?
A game company surveys players after a tournament about rule changes. Whose opinions can the results best represent?
A librarian surveys people checking out graphic novels about a reading challenge. Whose views can the survey best support?
A principal surveys only an honors math class about a field trip. Whose preferences can the survey best describe?
A transit agency surveys riders on one morning bus route about seat comfort. Whose opinions can the survey best describe?
A science club surveys its members about after-school activities. Whose activity preferences can this sample best describe?
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.
Pick a tile, answer, hit bonuses and steals.
Estimating a Population from a Sample
20 questions
