*OFFICIAL THREAD* GCSE EDEXCEL STATISTICS 23rd JUNE 2014

Original post by GenuineHpLaptop

what answer did people get for the fish question? I got 150

Original post by Ginger_Gymnast92

me too

Me too!

What did people put for that last one?

Original post by bj1

Not too bad overall, except the 95% distribution thing and the last one.

Will "Mr M" be posting his answers tomorrow? (They're supposed to wait 24 hours)

Is he edexcel?wheres he posting it-which area of tsr?
And completely agree,that 95% one was weird aswell

Reply 61

Original post by Strom

I'm in year 10 and that was my first ever GCSE exam :smile:

Hoping for 90+% but i always lose some marks for the sampling questions

I'm in year 10 too! But it was my fourth exam as we did a core science gcse as well :3

Reply 62

Original post by #sarahsmith2

What did you guys put for the why is it number.8 even though they add up to number.9??

Human error/computer error? I put mistakes when entering total

Reply 63

What's the wieghing of the controlled assesment? 25% or 65%? Could a high A* exam compensate a borderline B C/A?

Reply 64

Original post by bj1

Not too bad overall, except the 95% distribution thing and the last one.

Will "Mr M" be posting his answers tomorrow? (They're supposed to wait 24 hours)

Who is "Mr M" and I don't think it matters too much... The 'unofficial mark schemes' for other exams were all up before 6 on the same day

Reply 65

Original post by bj1

Not too bad overall, except the 95% distribution thing and the last one.

Will "Mr M" be posting his answers tomorrow? (They're supposed to wait 24 hours)

What did you get for the distribution question? It was just 2 s.d s (where 95% of the data lies in a normal distribution) - you calculated 30 in the previous question so it was 2x30 (60) then add/subtract that from the 107, giving you a lower value of 47 and an upper value of 167. I can't remember the question exactly but I'm sure it went roughly like that.

(edited 9 years ago)

Reply 66

Original post by lyricalvibe

What's the wieghing of the controlled assesment? 25% or 65%? Could a high A* exam compensate a borderline B C/A?

The controlled assessment is worth 25%, the exam 75%.

Reply 67

Original post by aaronm360

What did you get for the distribution question? It was just 2 s.d s (where 95% of the data lies in a normal distribution) - you calculated 30 in the previous question so it was 2x30 (60) then subtract that from the 107, giving you a lower value of 47 and an upper value of 167. I can't remember the question exactly but I'm sure it went roughly like that.

Yeah that's what I put :smile:

Also, for the second part you had to say whether the zoologist was right. At first I got confused and thought it had to be related to the whole 95% thing so I said she's right as almost 95% of data lies within 2s.d. Then I added the histogram showed no skew

Reply 68

Original post by aaronm360

The controlled assessment is worth 25%, the exam 75%.

Thank you! My teacher started the course saying otherwise -_- i have hopes for better grades now :biggrin:

how'd you find the exam?

Reply 69

Original post by #sarahsmith2

Who is "Mr M" and I don't think it matters too much... The 'unofficial mark schemes' for other exams were all up before 6 on the same day

Hes a maths teacher that post exam mark schemes, i think it's a teacher thing

Original post by aaronm360

What did you get for the distribution question? It was just 2 s.d s (where 95% of the data lies in a normal distribution) - you calculated 30 in the previous question so it was 2x30 (60) then add/subtract that from the 107, giving you a lower value of 47 and an upper value of 167. I can't remember the question exactly but I'm sure it went roughly like that.

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<br />
I put that too :smile:

Reply 70

S99J

Original post by #sarahsmith2

Yeah that's what I put :smile:

Also, for the second part you had to say whether the zoologist was right. At first I got confused and thought it had to be related to the whole 95% thing so I said she's right as almost 95% of data lies within 2s.d. Then I added the histogram showed no skew

I thought he was wrong because the histogram showed positive skew and the midpoints of the values were below and above the lower and upper value of 2SD.

Reply 71

Original post by #sarahsmith2

Yeah that's what I put :smile:

Also, for the second part you had to say whether the zoologist was right. At first I got confused and thought it had to be related to the whole 95% thing so I said she's right as almost 95% of data lies within 2s.d. Then I added the histogram showed no skew

Yeah, I put that it was roughly bell-shaped, which shows a normal distribution - so 'the zoologist' was correct. :biggrin:

Original post by lyricalvibe

Thank you! My teacher started the course saying otherwise -_- i have hopes for better grades now :biggrin:

how'd you find the exam?

Haha, sounds like your school was about as prepared as mine was! :wink:

I thought it went quite well, apart from about two questions where I lost a couple of marks. Hopefully I got at least in the high 80s, if not 90s as that's what I need for an A*.

We'll find out in late August I suppose! :rolleyes:

Reply 72

Original post by aaronm360

Yeah, I put that it was roughly bell-shaped, which shows a normal distribution - so 'the zoologist' was correct. :biggrin:

Haha, sounds like your school was about as prepared as mine was! :wink:

I thought it went quite well, apart from about two questions where I lost a couple of marks. Hopefully I got at least in the high 80s, if not 90s as that's what I need for an A*.

We'll find out in late August I suppose! :rolleyes:

Started in January, did a mock straight away and got a B so we switched from furthrr maths to this in hopes for good grades :/ you done your maths gcse already?what did you get?

Same really, I'm hoping with any stupid errors, 80s :smile:

i yhought the grade boundaries we're lower than that?why do you need so much for an A*?I'm hoping for an A atleast though :wink:

Reply 73

Original post by lyricalvibe

i yhought the grade boundaries we're lower than that?why do you need so much for an A*?I'm hoping for an A atleast though :wink:

It's because of my CAT mark. It wasn't bad but my teacher offered me such little guidance that I thought it could have been much better. Some people at my school need over 100% for an A* in the exam (obviously not possible).

Reply 74

Original post by aaronm360

It's because of my CAT mark. It wasn't bad but my teacher offered me such little guidance that I thought it could have been much better. Some people at my school need over 100% for an A* in the exam (obviously not possible).

Can you show me how you work it out? And unlucky, i think I'll be in a similar position and my teacher did the exact same- he just acted as though we should know what we're doing when we'd only been doing the course for a couple months, plus we did THE WHOLE C/A over one week and the week they chose was the one just before exams start :angry:

good luck though! :smile:

How do you work it out?

Reply 75

Original post by lyricalvibe

Can you show me how you work it out? And unlucky, i think I'll be in a similar position and my teacher did the exact same- he just acted as though we should know what we're doing when we'd only been doing the course for a couple months, plus we did THE WHOLE C/A over one week and the week they chose was the one just before exams start :angry:

good luck though! :smile:

How do you work it out?

Sorry, I have no idea. My teacher just used some complicated-looking Excel spreadsheet equation to calculate it, and said it was 'a rough guess' due to grade boundaries or something like that. A lot of help at my school! :biggrin:

Reply 76