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# Edexcel S1 A Level Maths watch

1. I am going to fail stats !
2. Another question, not maths related haha, but will we be penalised for drawing diagrams / charts in pen?

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3. (Original post by OllieGCSEs)
Another question, not maths related haha, but will we be penalised for drawing diagrams / charts in pen?

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No of course not. But it's best to do it in pencil if you make a mistake you can easily rub it out.
4. (Original post by Nathan0012)
3 significant figures, good luck for tomorrow, I hope you don't make any silly mistakes, it seems to be all I'm doing as well
ah ok yeah you too , hahaha same i keep doing them ! the worst bit is if you make it early on your totally ****ed for the latter parts of the question !!
5. (Original post by Prabin)
If they say Q3 = x, then you know that probability of z being less than x is 0.75 because Q3 = 75%

If they tell you Q1 = x, probability of z being less than x is 0.25 as Q1 is 25% and then you read z values off the tables
Ahh okay thank you Good luck for tomorrow!
6. I need help ! :'S

basically, you know when they are asking to find the width and length for any specific bar in the histogram, is there any formula that? Please help
7. (Original post by Geassuser)
I need help ! :'S

basically, you know when they are asking to find the width and length for any specific bar in the histogram, is there any formula that? Please help
You have to use ratios common sense really

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8. (Original post by Geassuser)
I need help ! :'S

basically, you know when they are asking to find the width and length for any specific bar in the histogram, is there any formula that? Please help
width1/width2 = class width1/class width2

height1/height2 = frequency density1/frequency density2
9. (Original post by That_Clever_Guy)
You have to use ratios common sense really

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Attached Images

10. (Original post by Geassuser)
I need help ! :'S

basically, you know when they are asking to find the width and length for any specific bar in the histogram, is there any formula that? Please help
width is basically a ratio/proportion of class width. So if the class width for a given group was 10 and the width was 5 , and it asks you to find width for a group with class width of 5 - then the width would be 2.5 ( because 5( new class width) is a half of 10 ( original class width) so the width of the new group must be half of 5 - the original width )
11. (Original post by Nathan0012)
width1/width2 = class width1/class width2

height1/height2 = frequency density1/frequency density2
I applied the width formula for this question, and Got the width as 3. But the mark scheme says 4. Did I apply it wrong? Really confused

OH I GOT IT. Made a silly mistake -_- Thank you so much. Those formulas are amazing =D !
Attached Images

12. Hey guys what does interpolation means
13. we use interpolation to find quartiles from a group frequency distribution table
14. Looks like some of you are gonna be doing an all nighter. It's a morning exam so maybe it is possible :/

You guys need some sleep though

Best of luck guys, make TSR proud.
15. Soloman F S1 Question 3c please anyone?

16. (Original post by James A)
Looks like some of you are gonna be doing an all nighter. It's a morning exam so maybe it is possible :/

You guys need some sleep though

Best of luck guys, make TSR proud.
That really isn't advisable though, please don't pull an all-nighter, guys! Wake up early to revise if you have to, but you do need some sleep! This isn't a science exam, where pulling an all-nighter to cram can be effective. For maths, it's imperative that your brains are functioning as well as possible!
17. for Q3C Soloman F s1 i thought it would be 0.2483^2 then multiply by 0.7517 ( ie certificate, certificate, no certificate)
18. (Original post by justinawe)
That really isn't advisable though, please don't pull an all-nighter, guys! Wake up early to revise if you have to, but you do need some sleep! This isn't a science exam, where pulling an all-nighter to cram can be effective. For maths, it's imperative that your brains are functioning as well as possible!
smh
19. why is my message deleted
20. btw who is doing an all nighter??

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