Exam 1 Answers?

[BakedDwarf]

I hear some speculation on question 6 CORE, I got B but some people say it's A(something to do with the outliers).
Can someone confirm this?
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I did A for that question, and i'm not sure if it's wrong or right.

I've done some googling and it appears there is no definite answer. E.g. the website link below shows that A is correct, but other websites show B is correct
http://www.statisticslectures.com/topics/fivenumbersummary/

[Han123]

I hear some speculation on question 6 CORE, I got B but some people say it's A(something to do with the outliers).
Can someone confirm this?
(Image removed from quote.)

I understand where people are getting A from, but to me the most correct answer would be B, because it's asking for the maximum value. Regardless of whether it's an outlier or not, the highest value is still 180. But yeah, I can't find much online about it either 

[TiffanyF01]

99% of the time, losing only 1 mark will result in a 50 given your ranking/cohort strength is good. A 50 is also possible but very unlikely if you lose 2. Don't worry too much about marks now though, just focus on acing the next exam.

Thank you so much Intel and good luck for your exams as well 

[Han123]

Okay I just found this in the Nelson Cengage notes/book and this is indicating that the outlier is counted as a maximum, which would make B correct for Question 6 in Core.

[blaaah]

Help with Q9 from geometry and trig and Q8 from business
Im not sure how to do them

[okthen]

It is definitely B, i checked it twice with my tutor, you have include the outliers. 

[okthen]

Don't worry a bit. it is definitely B, I checked with my tutor and he confirmed it  You have to include the outliers.

[jimbo9]

Yeah me too, feeling so annoyed at myself right now haha    hopefully we don't lose any more marks in exam 2

Don't worry - you were right Geometry & Trig Q9 is A.

[okthen]

What did u guys put down for CORE Q2

[StupidProdigy]

Don't worry - you were right Geometry & Trig Q9 is A.

No it's not

[Law]

What did u guys put down for CORE Q2

Median..i think thats the question isnt it. I remenber putting median to one of the first few questions in core

[jimbo9]

No it's not
[/quote

No it's not

The ratio of volumes or k cubed is 1:2 so the ratio of distances is 1 to the cube root of 2 or 1: 1.26 so the bases of the two sides are 8 and 8/1.26 respectively. That gives a base of 6.35 so d is 1.65 which is closest to distractor A.

Would be interested to know where people think k squared comes from - the question is nothing about areas.

Sorry to be the bearer of bad news!

[Maths Forever]

No it's not

The answer is B: 2.3 for Q9 of Geometry and Trigonometry. You need to use the fact that the volume and face area of the smaller wedge are half that of the larger wedge.

k = (8-d) / 8
k^2 = 1/2
Solve 1/2 = ((8-d) / 8 )^2
Therefore, d = 2.3, option B

[TheMereCat]

The answer is B: 2.3 for Q9 of Geometry and Trigonometry. You need to use similar triangles, and use the fact that the area of the triangular face of the smaller wedge is half that of the larger wedge.

Actually the volume was half for the smaller wedge (k^3) so you had to cube root that find the length of the smaller wedge then take that away by 8, you get A

[Maths Forever]

Actually the volume was half for the smaller wedge (k^3) so you had to cube root that find the length of the smaller wedge then take that away by 8, you get A

The ratio of volumes is equal to the ratio of the areas for this triangular based prism.