# selina1104

Members

5

1 Unknown

• Exams
May 2020
• Country
South Korea

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1. ## Physics IA Uncertainties Average

Hi~ I am writing my physics IA, and have come across a problem: I have data for six trials, and when I am calculating the uncertainty of its average values, which of the two methods should I use?: 1. (max-min)/2 method 2. standard deviation Should I use the first method or the second method for my average uncertainty for six trials? Which one is the method that is generally approved by IB and is capable of getting a level 7 in the internal assessment? Thank you!!
2. ## EE Supervisor Change (Urgent!!!! Comments and Help PLEASE)

WOW I feel relieved now Thank you for your answer I really appreciate it!
3. ## EE Supervisor Change (Urgent!!!! Comments and Help PLEASE)

Hi, For my EE, I am writing on Economics, and I have already completed my first formal reflection session on RPPF. Then, I heard that my Economics teacher, who is my supervisor, will leave school next year when I am in Grade 12 and told me he won't be able to supervise me until the completion of the EE. This means that I have to change the supervisor next year when my economics teacher for Grade 12 is confirmed. But what I am worried about is this: 1) Are we allowed to change our supervisor during the middle of our EE process? 2) Because I have already completed the first reflec
4. ## URGENT!! Maths HL IA idea optimization

Hii My IA idea submission is due tomorrow and I have no idea what I really want to do, but came up with the idea of optimization using differential equations. I thought of reducing the surface area of packaging in different shapes like sphere and prisms, and calculate the minimum point (minima) through second order differentiation equation. I am also planning to then apply this to different real life examples like Toblerone triangle prism or something like that. Do you think this is too simple at the level of maths HL because it is just at the level of maths HL in the syllabus? I am
5. ## 2018 May Grade Boundaries

Version 1.0.0