Chapter 10 - Day 3
Students Struggled With…
Remembering to use t* instead of z*. Several students defaulted to seeing "95%" and using a critical value of 1.96.
Using various types of displays to check and see if conditions are met. We gave them a variety of displays that informed of if the sample looks approximately normal and what the sample size was.
We got pretty good of always asking the students for each condition"what does it let us do?". We should really do the same thing every time we have them write down t - "why t* instead of z*?". This way, we have plenty of opportunities to discuss that we are estimating two values (mean and standard deviation) instead of just one.
Make sure the homework includes a variety of additional displays. We want the students going back to Unit 1 when we shows dotplots, stemplots, boxplots, and histograms to think about how we could use all these displays to check conditions.