- How often does chance do this?
- Decide, and know you can be wrong
- Simulated against exact
- The pile of sample proportions
- Bigger samples bunch closer
- Is this sample surprising?
- Margin of error: two SDs
- Reading p̂ ± margin
- Bigger samples and two polls
- What the margin does not cover
- A sample mean as an estimate
- Means vary less than values
- Margin of error for a mean
- Reading a mean ± margin
- Unlocks after
- Opens up