- Get all of your stamps (blue smiley faces) together. Use whatever works for you--a bag, folder, staple them all together, glue/tape all the stamps to one paper, or whatever other method you like...
- Count all of your stamps and write your total on the front (with your name)
- Double check your count
- I will choose 5 random names from each period to double check; if your count is incorrect you will be given a 0
- I don't know how many stamps you will need total, you just have to give me all of them! (next quarter it's a different stamp and a different color)
Make sure you "know what you need to know" about experimental design! I will accept any/all experimental design homework tomorrow for full credit!
- Weekend HW:
- First, complete the "experiments wrap up" worksheet!
- Next, for some midterm review, complete the 4 MC questions also provided in class (or below)
- Weekend HW Answer Keys:
- Scroll down a couple blog posts for Thursday's HW and any other experimental design hw
Experimental Design: What do I need to know for the midterm?
- We will not have a test on experimental design/sampling before the midterm, but these topics will be included in the midterm, so be ready.
- We may (or may not) have a test on data collection after midterms, as we'll (quickly) finish this unit that week. We'll see/discuss.
- Identify factor (explanatory variable), treatments, response variable, experimental units/subjects
- Explain a process to randomly assign treatments (random # generator or #'s in a hat)
- Determine if a given context represents is an experiment or observational study.
- Can we determine cause and effect from a given study? (determine if it's an experiment or not; if it's an experiment we can establish cause + effect; if it's not an experiment, we can't)
- Identify a potential confounding variable/explain why a variable might be a confounding variable
- Choose a variable to block by and explain why
- Create blocks based on this criteria
- Explain how to randomly assign treatments in a blocked design
- Explain if there is/is not a control group, how you know, and explain why it is/would be useful to have a control group
- Determine if a study is single/double blinded OR explain how a study could be single/double blinded
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