ecmt1010 ..QUiZ next week? (1 Viewer)

[absolution*]

due to popular demand ill try to post qu answers tomorrow

everyone else feel free to also do the same so we can cross-check

 

[ToO LaZy ^*]

so glad i did some maths at school...the whole 4 units of it.
ill too, post answers on here once ive done them, which will be hopefully on wed or thurs.

 

[ToO LaZy ^*]

ok..
i was bored..so ive done the first 3 qs

solutions:
1)
a) 1942
b) 2795

2) 772

3) 1124

 

[stazi]

ok. im officially officially fucked now.
I got 10,025 for 1 a)
And for 1b) I got 972

How did you get the other answers?

For 1a:
S(3+22)+S(100)sq
= 25+10000
=10,025

1b:
S(25Xi+40XYi+16Yi)
=500+120+352
=972

Where am i going wrong.

Damn im stressed out :s

 

[stazi]

I won't attempt 2 and 3 yet, as im absolutely wrong for the others.

4:
a) How do we draw a histogram. Aren't the bin widths meant to be the same? If petrol is on the X axis, then it wouldn't work as the intervals are all diferent?

9:
...huh?

 

[stazi]

and i hate the person who told me i dont need a bridging course for ecmt.

 

[Rorix]

Hi forum krew,

Given time I will explain some worries away.


timeforpeople, if the bin widths for the histogram are not equal, you need to change your frequency count assuming random distribution so that the area is consistant with your bin width* count, look at the density diagrams tig was talking about before for more on this sort of thing.

 

[stazi]

hmm anyone wants to make some easy money tomorrow? I'd be willing to pay someone to go over the quiz with me.

 

[stazi]

Questions 1-3; 6 done

 

[s.m.i.t.h]

whats the answer for 6d)?

 

[stazi]

whats the answer for 6d)?

60 ................

 

[myg0t]

Hi forum krew,

Given time I will explain some worries away.


timeforpeople, if the bin widths for the histogram are not equal, you need to change your frequency count assuming random distribution so that the area is consistant with your bin width* count, look at the density diagrams tig was talking about before for more on this sort of thing.

Does that mean you have to adjust your class sizes? You cant just draw a histogram based on given information??

 

[AGB]

can someone please help me with q9? thats the only one i cant do...cheers

 

[matt#1]

can someone please help me with q9? thats the only one i cant do...cheers

Could someone please post their answers to the last 3 questions? They are the only ones I havent done yet. Thanks.

 

[sarevok]

zzzzzzzzzzzzzzz

 

[stazi]

AGB: add me to msn if you need help with q9.
Stas_m_@hotmail.com

 

[stazi]

Question 1 solution

 

[stazi]

questions 2 and 3

 

[stazi]

Question 5 a and b(part 1)

 

[stazi]

Question 5 b(part2), c and d
also please note 5c is actually 12.66%
and 5d is wrong as well (read it incorrectly) : p but its simple enough. formulas all there