Idea 9of 22Builds onWhoever is nearby is not everyone
More people won't fix it
Does asking more people fix a sample that leaves people out?
Today you'll discover
- what a bigger corner sample says
- what a small fair sample says
- what really fixes the plan
Think firstMaya asks 20 now, all near the court
Maya now asks all 20 students near the court. Is that better?
Decide first, then press Next. Compare the bar for the 20 with the bar for the 10.
The same 60 students. A dashed shaded box marks the 20 in the four left columns near the court; the other 40 fade. All 20 are ringed. At the right: 13 of 20 want a court, against 18 of 60 for the school. Then 10 names from a hat: 3 of 10, close to the school.
See the whole ideathe big idea and the key word, in one place
The big idea
A bigger sample from the same corner still leaves the same people out.
Want a court, out of 100
20 near the court: 13 of 20, 65 out of 100. 10 from the hat: 3 of 10. The school: 18 of 60, 30 out of 100.
Easy to get wrongDon't judge a sample by its size first. Ask who could be picked, then ask how many.
Key word
- sample size
- how many people or things are in the sample
Ready to use it?
- Choose the plan that fixes a sample that shuts people out.