Dr Waleed Ali

[Danny Groves @DannyGrovesN7]

My first talk of the year, and actually not on maths! @SciCafeCardiff is great for anyone who is just interested in science as a whole. Me and @walben_ali have both prepared very general talks, come along if you're interested!

[Dr Waleed Ali @walben_ali]

Giving my first talk in Bath, this is the venue @TheCanonBath

[Dr Waleed Ali @walben_ali]

I have officially broken the Snapchat sphere in Bath now.

[Dr Waleed Ali @walben_ali]

So I am now officially on 9gag. Achievement unlocked ... become a meme.

[Dr Waleed Ali @walben_ali]

@CardiffMathsPGR Literally the best reply to my deep insecurities to make me feel better

[Dr Waleed Ali @walben_ali]

@CardiffMathsPGR I really am not photogenic even when my face isn't even showing

[Dr Waleed Ali @walben_ali]

@Fitzkid11 Welcome to the dark side

[Dr Waleed Ali @walben_ali]

@Fitzkid11 Charley is in my spot exactly, so you'll know where to find him

[Dr Waleed Ali @walben_ali]

New term, new chapter

[Dr Waleed Ali @walben_ali]

@Dr_Evans_Maths These are extreme examples obviously

[Dr Waleed Ali @walben_ali]

@Dr_Evans_Maths Median: when you have outliers. Average money a person has for 5 people: £5, £5, £5, £5, £500000000000. In this case, the median is better

[Dr Waleed Ali @walben_ali]

@Dr_Evans_Maths Mode: for categorical data, say favorite colours. If 10 people like red and 20 like yellow, then the favorite colour isn't yellowish red

[Dr Waleed Ali @walben_ali]

@Dr_Evans_Maths The 9s thing always works, you can actually derive it just as you would with any recurring decimal

[Dr Waleed Ali @walben_ali]

@Dr_Evans_Maths @smllmn The formal proof might be too much but this demonstration just shows them that you can do it

[Dr Waleed Ali @walben_ali]

@Dr_Evans_Maths But this is obviously to convince themselves that works using a calculator, the only way to have an airtight argument is with a formal proof

[Dr Waleed Ali @walben_ali]

@Dr_Evans_Maths Eg. 0.654765476547...=6547/9999

[Dr Waleed Ali @walben_ali]

@Dr_Evans_Maths An easy was to demonstrate that is that the recurring decimal is the repeated section over as many nines as there are repeated digits

[Dr Waleed Ali @walben_ali]

@sally_hill11 Interesting fact https://t.co/3oulSJDVUI

[Algebra Etc. @AlgebraFact]

There cannot be a magic square filled with Fibonacci numbers.

[Dr Waleed Ali @walben_ali]

@smllmn @asylhawa https://t.co/sLVyPb6VBQ

[Probability Fact @ProbFact]

'Nature abhors an unconditioned probability.' -- @jakevdp

[Dr Waleed Ali @walben_ali]

@Dr_Evans_Maths Welcome to the dark side