# anthropo

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## Profile Information

• Gender
Female
• Exams
May 2016
• Country
United Kingdom

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1. ## Data Analysis Questions

I'm really struggling with data analysis questions in HL Biology at the moment. Does anyone have any tips on how to do them well? Thanks in advance
2. ## How to tackle 22 marked questions that use the command term "Explain"

I can't find any past LAQs that have come up with this command term so I'm pretty sure it should only come up for 8-mark SAQs. I can imagine it would be very difficult to write a 22-marker with 'explain' because it doesn't really lend itself to the discussion an LAQ needs

4. ## IA Psychology IA: Inferential Statistics Help

A few people in my class did a replication of Loftus and Palmer and they used the Mann-Whitney U test rather than t-test since that fitted their type of data better, so it might be worth having a look into that
5. ## Psychology IA- Inferential Statistics

The whole idea behind inferential statistics is to see whether you accept your experimental or null hypothesis. My teacher recommended that we work out our inferential statistics manually and put it in an appendix just so we understand all the steps involved. To explain it, you compare the lowest calculated value to the critical value, and if the calculated value is less than the critical value then the experimental hypothesis can be accepted. You can use this to form a conclusion for your investigation
6. ## Question about SL Bio IA

A few people in my class are doing data-based reports and you still have to formulate a research question and hypothesis. https://ibpublishing.ibo.org/server2/rest/app/tsm.xql?doc=d_4_biolo_tsm_1408_1_e∂=1&chapter=1 You can find a few samples in the link above to get an idea of the sort of structure you're aiming for, but make sure that you pay attention to the criteria of the IA since some parts of the criteria seem like they would be a little more difficult to get marks for on a data-based report compared to a hands-on experiment.
7. ## deadline for sending UCAS application

The final deadline is the 15th January, but most people get theirs in well before that.
8. ## Chemistry HL help

No, it shouldn't. The theoretical yield is the maximum amount of product that can be formed if all of the reactant reacts whereas the experimental yield is how much actually reacts. The percentage yield would be calculated by: (experimental (actual) yield/theoretical yield) * 100
9. ## Evidence for CAS

Thank you guys
10. ## Possible Chemistry IA Idea

That's a really unique idea and would definitely score you points for personal engagement. However, my concern is how would you gather quantitative data in order to do data processing? And how would you determine the 'quality'?
11. ## Chemistry HL help

Since there's excess oxygen, you know the iron disulfide is going to be the limiting reagent. The reacting coefficients tell you that 4 moles of iron disulfide form 2 moles of sulfur trioxide. mass/mr = moles 30.0g/(55.8+(32.1*2)) = 0.25 moles 0.25/2 = moles of SO3 = 0.125 moles moles * mr = mass 0.125 * (32.1+(16.0*3)) = 10g of SO3
12. ## Chemistry SL/HL HELP!

Here's how I would work it out: Use the formula to work out the amount of moles of both salicylic acid and acetic anhydride mass/Mr = moles moles C7H6O3 = 3.0/(12*7) + (6*1) + (3*16) = 0.022 moles moles C4H6O3 = 4.0/(12*4) + (6*1) + (3*16) = 0.039 moles The salicylic acid and acetic anhydride are reacting at a 1:1 ratio, which means you equal amounts of moles to form an equal amount of aspirin. Therefore, the salicylic acid is the limiting reagent so you will only be able to form 0.022 moles of aspirin. In grams this would be: Mr* moles = mass ((12*9) + (1*8) + (16*4)) * 0.022 = 3.96 g (When you do the calculations make sure you use the mass values in the data booklet which should be to two decimal places.)
13. ## Is online education really worth it?

I'm currently in my second year of taking Spanish B on Pamoja since I wasn't able to take any of my school's language options. If you're really interested in the course and it's your only opportunity to take it then I would highly recommend it. It requires a lot more self-motivation than a typical course would as you're completely in charge of managing your time and completing the tasks but you definitely get as much support as you would in a traditional classroom. The teachers are great at giving detailed feedback and supporting you throughout the course. The only thing I really hate doing is group work, which is essential in Spanish B to do interactive orals, so I assume it would be less common in psychology. If you any specific questions about Pamoja, please do not hesitate to contact me!
14. ## Evidence for CAS

How essential is it that we have solid evidence for CAS (e.g. photos, signatures, etc.)? Or do we just have to write reflections and have them approved by our CAS coordinator?
15. ## Bio Hl syllabus self study?

Honestly, most of biology HL is pure memorization. As long as you go through the textbook and make very detailed notes on each topic and do as many practice questions as possible. The syllabus is absolutely crucial and make sure you know it inside out. A 7 is totally in your reach.
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