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National 5 Maths Exam 2016

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Reply 100
Avatar for Jay431
Jay431
2
Original post by Abbyy1234
For the comparison I said on average Sarah had longer waiting times but jack had more varied times


*Sophie

Yep that's what I got I think.
Reply 101
Avatar for jj1814
jj1814
8
Original post by Erin_2000
Think I got 5.73 and 13 for the mean


Thank god!

For b) was the standard deviation more variable or less variable? I said more but I wasn't sure
Original post by jj1814
I'm pretty sure I got 5.73, I wasn't sure which numbers to use... Now I'm worried!

That's exactly what I got!
Original post by jj1814
I'm pretty sure I got 5.73, I wasn't sure which numbers to use... Now I'm worried!

Please don't be worried I'm sure you're right and I'm wrong haha
Reply 104
Avatar for Jay431
Jay431
2
Oh what did everyone get for the ladder question?
Reply 105
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eve_4342
OP
12
Original post by Ethan100
To be quite honest, I really enjoyed revising for maths because I'm quite good at it, however, the SQA has completely destroyed my confidence.

I can do maths, and I normally am like the "dark horse" in class but my confidence has died for higher next year.

My confidence =
Original post by jj1814
Thank god!

For b) was the standard deviation more variable or less variable? I said more but I wasn't sure


I said on average Sophie had to wait longer and compared the means, and then said her waiting times were less (or more I can't remember The other SD) consistent and compared the standard deviations
Reply 107
Avatar for jj1814
jj1814
8
Original post by Jay431
Oh what did everyone get for the ladder question?


I got 62 but my method was... questionable! I'm terrible with angles. I did something like 140/150 * 66 and rounded up
Reply 108
Avatar for Jay431
Jay431
2
Original post by jj1814
I got 62 but my method was... questionable! I'm terrible with angles. I did something like 140/150 * 66 and rounded up


Yeah I did something like that but got something in the 70s I think
Original post by jj1814
I got 62 but my method was... questionable! I'm terrible with angles. I did something like 140/150 * 66 and rounded up


I think I got 78 degrees, I used the sine rule
Original post by jj1814
I got 62 but my method was... questionable! I'm terrible with angles. I did something like 140/150 * 66 and rounded up

I think I used sine rule and got 70 something...? I'm not sure
Reply 111
Avatar for eve_4342
eve_4342
OP
12
Original post by Jay431
Yeah I did something like that but got something in the 70s I think

I got 74
Reply 112
Avatar for Jay431
Jay431
2
Original post by Erin_2000
I think I got 78 degrees, I used the sine rule


Original post by Abbyy1234
I think I used sine rule and got 70 something...? I'm not sure


Yes this is what I done.

Used sine rule.
Reply 113
Avatar for jj1814
jj1814
8
Original post by Jay431
Yeah I did something like that but got something in the 70s I think


71? I just did it with 150/140 instead of the other way round... I hope I at least get a mark for the working!
Reply 114
Avatar for Jay431
Jay431
2
Original post by eve_4342
I got 74


It was either 74, 76 or 78. I can't remember lol.
I don't know if anyone would be interested but the answer for the n to the power of something question is one over n to the power of 4
Reply 116
Avatar for Jay431
Jay431
2
Original post by Abbyy1234
I don't know if anyone would be interested but the answer for the n to the power of something question is one over n to the power of 4


Yup that's what I got.

I'm so happy because I'm terrible with those lol
Reply 117
Avatar for Jay431
Jay431
2
For the subject of the formula thing did anyone get:

K = L^2+P/4t
Original post by Jay431
Yup that's what I got.

I'm so happy because I'm terrible with those lol

I know I was so happy when I go that, and the simplified trig identity, one right.
Original post by Jay431
For the subject of the formula thing did anyone get:

K = L^2+P/4t

Yes that's the right answer.

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