Edexcel A-level June 2019 Paper 3 Statistics & Mechanics exam walkthrough GCE New Specification

mistakes: at 15:21 I marked the max air temperature incorrectly on the box plot.

Time stamps:
00:00 intro
0:30 Q1 - probability tree, conditional probability (marble bags)
12:00 Q2 - box plot, quartiles, large data set
23:00 Q3 - product moment correlation, hypothesis testing,
29:45 Q4 - binomial distribution, large data set (cloud cover)
39:20 Q5 - normal distribution, finding unknown SD, difference of means test
54:38 Q6 - acceleration and position given velocity vector
59:25 Q7 - particles in motion, find time given acceleration, velocity at t=0, and direction
1:06:14 Q8 - statics, pulley mechanics
1:20:26 Q9 - statics, ramp resting on a drum
1:36:00 Q10 - projectiles, two balls projected at angles

[mathonify]

Time stamps:
Q1 - probability tree, conditional probability (marble bags)
Q2 - box plot, quartiles, large data set 12:00
Q3 - product moment correlation, hypothesis testing, 23:00
Q4 - binomial distribution, large data set (cloud cover) 29:45
Q5 - normal distribution, finding unknown SD, difference of means test 39:20
Q6 - acceleration and position given velocity vector 54:38
Q7 - particles in motion, find time given acceleration, velocity at t=0, and direction 59:25
Q8 - statics, pulley mechanics 1:06:14
Q9 - statics, ramp resting on a drum 1:20:26
Q10 - projectiles, two balls projected at angles 1:36:00

[Mrh.hckz]

The confidence this guy has to not make rounding errors using just 2 decimal places every calculation is what I need in my life

[kennethhickman]

Haha, can't believe he actually googled how to pronounce Leuchars 😂😂 what a legend !!

[MichaelHenderson]

Thanks for these videos. I was teaching in schools until I left, in 1989, so am a bit rusty, but one of my grandchildren took this exam last year, found it difficult, esp. Paper 1, but she still got an A. I'm helping the younger one now, taking exam next year (assume), and these are a good check on my working. I wish I knew why they all dislike doing mechanics though.

[Philmccracken]

this guy has honestly saved my maths a level

[iuliusconstantcornelio]

1:06:16 Yes, doing that type of question is way easier than doing projectiles OR moments at an angle !

[dawidzaborowski]

Hi @Maths Explained, is there any chance you could link and do a walkthrough of the 2020 alevel mock papers? Been really wanting to do them but cant find them anywhere? Many thanks!

[AliasAlexandra]

Hi, for mechanics Q1 (b) is the displacement found displacement from the origin rather than from the original starting postiion? surely if it were the latter you would subtract the starting postion so therefore you would just ignore c because you'd be adding then subtracting it. THank you very much for this video!

[username]

How come edexcel 2019 exam papers have not been released yet....

[kashoot]

Could you do the 2019 gcse papers please?

[tivonar]

Are they now doing stats and mechanics in separate papers for AS level aswell?

[shadz]

can you guys list the 2019 new spec pure papers back as i cant find it

[thisismychannel]

hey mate do you know what the a* grade boundary was for each of these papers? reguards

[kylezinho_]

For question 10, it asks for the velocity, why can't you just leave it in vector form? Doesn't taking the modulus of V give the speed?

[MrMinermation]

I really do not understand wtf is going on with the Standard Error and why we're using it. Looks like that last question is just a copy up of the mark scheme ):

[harryrawles]

15:21 you have put the max air temp at 32.3 when it should be 32.5 man

[maggiehodgson]

I would lake a paper copy of the exam before watching the video. I can only see the statistics bit. Any ide where to find the mechanics half? Thanks

[maggiehodgson]

I've just done question 5 on the mechanics paper without the video and managed to use the same method as the mark scheme. BUT for part B using u sin theta/ 2ucos theta =(10/(50-40root30) I get a negative value for theta. Can you explain please?

[iuliusconstantcornelio]

Quite a poor chiice to split the paper in 2 booklets, instead of keeping all questions in one....Oh well....

[melodychan]

from Q5a) the z- value for 15%, how do i know if it's negative or not if i use the data given from data booklet?