1. VIDEO - Standard error explained
2. Review SD/SE buffet page with lab group - discuss differences, make corrections
3. LAB: same as #2 but with lab graph comparing mean and SE of the two populations
also: write a CER comparing the two populations via means & SEM
Are you keeping up? Lab notebook should include: background info; question or objective; population histogram; results table; representative calculations/formulas; CER re:variation; graph of 2 population means with SEM; second CER re: populations compared.
LEAVE LAB NOTEBOOK for GRADING - make sure your name is clear
HW: • Buffet: Malthus essay - mark up, paraphrase, analysis q
• Bring a 'beak' - some sort of tool to pick up beans/seeds with
1. Variation study results
Quality data? No sloppy science!
Does your data support the claim? Graphs shared
2. PPT/handout: Describing a population via the standard deviation; Qualifying the sample mean via standard error.
3. Lab: compare your population with another: same, or different? Graph means with SE bars to determine; solve for mean +/- 1SE for both populations
4. 15.1 & 15.2 notes stamped
HW: • Lab: CER analysis re: variation as a paragraph in lab notebook
• Lab finish #3 from above in lab notebook. Graph by hand or in Sheets - see the lab ppt (Selection) for how to set up table, graph the means, and add error bars.
• Buffet: Statistics in Biology page
1. Finish PPT: Defining Life
15.1 & 15.2 notes stamped
2. Lab: generate quality data to support the claim that organisms are varied
record lab objective or question
what measurement tool do you need, (if any)?
no sloppy science!
3. Lab results: Histograms & descriptive statistics.
print 4/page - ask for help before wasting lots of paper and ink!
add to lab notebook
HW: • Make sure your lab work is complete thus far: background, lab objective or question, labeled histogram, results table with values for n, min, max, range, mean, median, mode.
• In Sheets, find the standard deviation of the data set by typing in the formula =STDEV, highlighting the column of data, and hitting 'return'. Use SD, n values to find standard error (SE) using the formula on the AP Formula sheet picked up in class today. (Consider inputting formula to Sheets.) Add both SD/SE to your results table.
• Note (highlight) any of these results set metrics that are on the AP Formula sheet.
1. Frog data and claims shared; MC practice question
2. Selection Lab prep: Artificial Selection of Wisconsin Fast Plants
3. HW stamped, reviewed:
Ch 1.1 notes; scientific methods reviewed via illustrative examples
4. Start Selection lab
5. Buffet: Unit 1, Mechanisms of Evolution
HW: Start text notes/questions 15.1 & 15.2 (Q: Reviewing this chapter: # 4, 7-12, Think scientifically #1) Printable copy here, and available in the classroom Tuesday morning..
Please join me on the G quad to check out the solar eclipse Monday during break! We have cool glasses you can wear to safely look at the sun.
• Locally: ~9am - 11:30 am; about 75% coverage of the Sun at the peak
• Solar eclipses are when the orbit of the Moon takes it directly between the Earth and Sun.
• Although the moon is much smaller than the Sun, it is much closer to Earth, so its shadow covers the Sun.
• Total solar eclipses happen every year, but we miss most of them (all that ocean!)
• This is the first solar eclipse over the continental United States since 1979 (and the first to run across the entire country since 1918).
• So what? scientists will use the very short window of time of total coverage to study the solar corona and the atmosphere
• What would be the arrangement of Earth, Moon, Sun in a lunar eclipse?
More on eclipses, including some citizen science opportunities at the NYT
Come by Friday for a reprint if you didn't get a book.
If you decide to drop the class, please return your book immediately.
1. Why AP Biology?
2. Course Overview : College Board, syllabus, scores
3. Get Book: 1:15; 3:00
4. Working with Data: Amphibian declines and pesticides
HW: • Complete the Working with Data through #4 (extension: Read more about Hayes in the New Yorker)
• From today's syllabus: take the notes on Defining Life (& Science Methods if you need to review ) use Cornell format, or create an outline
• Also from the syllabus, answer the Scientific methods Review q
• Review using spreadsheets for tables/graphs/formulas via this PPT
• get a sturdy lab notebook and other class supplies