Today, we discussed systematic sampling and stratified sampling (Section 1.3): why these methods are used and why they are not random samples.
We also discussed how to exactly calculate percentage of observations (a.k.a., proportion of observations and area under the curve) for a normal distribution using the TI83/84: http://stats.jjw3.com/math1431/ti83norm.htm. Keep in mind, if I ask you to estimate the percentage of observations using the 68-95-99.7 rule (a.k.a., the empirical rule), then you must use that rule and not the calculator to answer the question.
Lastly, we discussed some terms from Section 3.4 and Section 1.5. We will complete Section 1.5 and start Chapter 4 on Thursday.
I returned Test 1 today. Each question was worth 8 points. If you have any questions, please do not hesitate to ask me. Also, Test 2 will be postponed to a later date (this will be determined on Thursday).
At this point, you should be able to start working on the following assignments:
