A-Level Maths: L1-06 [Data: Histograms]

[@shaheerziya2631]

Thank you so much for this! It’s sad that the comments are so empty.

[@angelstarfire]

Thank you! Always was confused about the area of bar= k x freq

[@leaderoftaehyungnation9766]

thank you!! ur channel is the best at helping make maths easier to understand 😩😩

[@sahyesaarvadha8202]

You are truely a live saver
God bless you...

[@bluejaycray8590]

you are a lifesaver thanks!

[@adoontiallen986]

Thank you sir i really do appreciate for your good work 🥰

[@finaustin1962]

thanks this was really helpful!

[@hellokiuttyy]

This was so helpful, thankyou

[@sobia505]

Really useful. Thank you.

[@0ni_x4]

Great video thanks

[@henocksonbeerussama1080]

Thank you so much sir

[@Avamazingxx21]

I'm not even doing a-level maths, i'm doing psychology, but your videos are so usefullll, thank you so much!!!

[@yujirohanma203]

You do histograms in psychology?

[@karotic]

im sure that in psychology, they draw the histograms wrong and it should be frequency against the x axis.. not the FD

[@TLMaths]

@@karotic If the bars are of equal width, then you can use frequency. If they're of un-equal width, then FD should be used, otherwise the graph can be very much misunderstood.

[@Real_Madrid.]

Cheers sir

[@chloetsao3801]

you're literally the best person in the world

[@hellokiuttyy]

I just had to ask you, why you didn’t subtract half from the lower bound of one class width, and add half to the upper bound ?

[@TLMaths]

Surely the intervals would then overlap?

[@beccasouthwick]

you only do this if the widths aren’t already overlapping eg if it was 5-6 and then 7-12 you’d bring 6 up to 6.5 and 7 down to 6.5

[@kieranjohal1035]

Thanks for this.
Would the x-axis of this graph be labeled as frequency density (FD)?

[@TLMaths]

No that's the y-axis. The x-axis is x.

[@mlfacts7973]

Thanks

[@yahiaaa3]

fire hoodie sir 🥶

[@lornanelson]

Hi, please correct me if I'm wrong, but I thought the equation was frequency = k x area not area= k x frequency. I don't think that makes sense?

[@TLMaths]

Wouldn’t “your k” = 1/ “my k”?
So it doesn’t really make any difference

[@lornanelson]

@@TLMaths Oh sorry, I don't quite understand still

[@TLMaths]

Well if you say f = 2A, then that’s the same as A = (1/2)*f.
So f=kA or A=kf. It doesn’t matter which (the k in each equation is different of course)

[@lornanelson]

@@TLMaths Thank you so much that makes a whole lot more sense!

[@unknownzzz9089]

What does skewed mean?

[@TLMaths]

Here's a video on Skew: ruclips.net/video/yO7LngGNh1o/видео.html

[@muhammad-zaynkalyan6051]

What if they weren't overlapping ie 5 to 6 then 7-12

[@TLMaths]

Then you would have to extend the interval up to 6.5 and other down to 6.5

[@urja57]

you have to decrease 0.5 from lower class and add 0.5 to upper class, so, it will be 4.5-6.5