Further Math Exam 1: Answers + Discussion!

[Dan1995]

I got E for Q5 in core

Mind explaining how?

[kevleee]

I got E for Q5 in core

I'm assuming you counted the total number of female drivers?

[Daniel55555555]

Copy of the exam anyone?!

Why it is not cut B

I explained that question in detail in an earlier post

[Dan1995]

Why it is not cut B

B doesnt separate the sink from the source completely, you could still go from the top car park to the exit.

[kevleee]

Why it is not cut B

Because it doesn't stop the flow from both car parks to the exit.

[Daniel55555555]

Oh.no. I get it.  Now

[Daniel55555555]

Why Q6 not e in core

[QTPi]

Why Q6 not e in core

Only 90 and 100 were outliers therefore A is the only possible answer

[Dan1995]

Why Q6 not e in core

These have already been explained in earlier posts, but it's because E incorrectly shows that the value at approximately 74 was an outlier, whereas the only values that are outliers (according to Q3+1.5xIQR) are those values over 80. So the answer is A.

[Scrono13]

Q 8 number patterns? Why not A?

[Durango]

In question 9 for number patterns, couldn't it also be C?

having to say which isn't true, D is a more obvious answer, but with C it states "The number of milligrams of medicine that leaves Sam's body during any 24 hour period will always be less than 200."

now, this would be true if it had said "less than or equal to" because the most milligrams that can leave Sam's body, in the given equation is = to 200

200 exceeds <200

[Daniel55555555]

Q8 why it's not A in core

[Durango]

Q 8 number patterns? Why not A?

This is a geometric sequence, so the graph will have a curving pattern to it

[Dan1995]

Q8 why it's not A in core

Mate, these questions have all been explained in detail in earlier posts?

But it's because you need a numerical and two categorical variables for a back to back stemplot, you have been given the numerical and then the only option that gives two categorical variables is E (Male and female). Option A is another numerical variable.

[Scrono13]

This is a geometric sequence, so the graph will have a curving pattern to it

Yeah but
Distance from x axis is same and this can't be for r less than -1