Can I have more context? Do you mean after you've compared the critical value and test statistic, so you put "The result is not significant"?(Original post by Studious_Student)
I used "insignificant" instead of "not significant". Would I still get marks for the conclusion? Because apparently "insignificant" is not correct :O
If so, I doubt you'd actually lose a mark for that but they definitely prefer not significant.
But for the next part putting "insufficient" is allowed, in case you meant that.
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ComputerMaths97
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Studious_Student
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- 15-06-2016 14:04
(Original post by ComputerMaths97)
Which one are people talking about a continuity corrections?
I only remember is for the 650 one, where it was P(x >/= 650) = P(Z > (649.5-600)/s.d) -
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- 15-06-2016 14:04
(Original post by Bealzibub)
how many marks will i lose if i did everything else correctly? it was 11mark question . -
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- 15-06-2016 14:05
(Original post by Studious_Student)
I used continuity corrections for the one where it asks for h fans that make up 99.9% of the fans that last longer or something. Don't know if I did it right though because I got a decimal. -
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- 15-06-2016 14:05
(Original post by ComputerMaths97)
Can I have more context? Do you mean after you've compared the critical value and test statistic, so you put "The result is not significant"?
If so, I doubt you'd actually lose a mark for that but they definitely prefer not significant.
But for the next part putting "insufficient" is allowed, in case you meant that. -
Studious_Student
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- 15-06-2016 14:07
(Original post by ComputerMaths97)
That wasn't an approximation so I didn't use a continuity correction there, at least as far as I can remember -
ComputerMaths97
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- 15-06-2016 14:07
http://www.mei.org.uk/files/pdf/spearmanrcc.pdf
Guys if you go to page 5, it says that there is no assumption for spearmans test (about the underlying distribution).. WHOOP -
Olivia98hey
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- 15-06-2016 14:11
How many marks do you reckon you'll need for an A?
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ComputerMaths97
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- 15-06-2016 14:22
(Original post by Olivia98hey)
How many marks do you reckon you'll need for an A? -
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- 15-06-2016 14:32
If anyone has the question paper, please could you PM it to me. TIA
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- 15-06-2016 14:34
(Original post by ComputerMaths97)
What did you get wrong, did you just get the wrong variance? -
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- 15-06-2016 14:36
(Original post by Bealzibub)
yes, i used population mean to work it out rather than sample mean, everything else 100% correct when taken wrong variance into accountAny idea? -
Studious_Student
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- 15-06-2016 14:41
I just saw the markscheme for a question I did wrong and they said to penalise any erroneous continuity corrections. Does that mean I won't earn any marks for the whole question and have 1 mark deducted even though I did the method right afterwards?
Also, I remember in the conclusion of my hypothesis tests I said that there is insufficient/sufficient evidence to suggest and conclude...would that be too assertive of a conclusion?Last edited by Studious_Student; 15-06-2016 at 14:46. -
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- 15-06-2016 14:44
What did people do for the scale on the scatter graph, how much of the graph paper did it need to take up?
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ComputerMaths97
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- 15-06-2016 14:45
(Original post by Studious_Student)
I just saw the markscheme for a question I did wrong and they said to penalise any erroneous continuity corrections. Does that mean I won't earn any marks for the whole question and have 1 mark deducted even though I did the method right afterwards? -
ComputerMaths97
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- 15-06-2016 14:46
(Original post by leaf3)
What did people do for the scale on the scatter graph, how much of the graph paper did it need to take up? -
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- 15-06-2016 14:47
(Original post by ComputerMaths97)
I used pretty much all of the graph paper up, I can't quite remember but I think I did jumps of 20 and jumps of 10 (can't remember which was which though) -
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- 15-06-2016 14:49
(Original post by ComputerMaths97)
Yeah from my memory they're INCREDIBLY harsh on continuity corrections being wrong/ misplaced. But I'm sure it was only a 3 or 5 mark question so you could only realistically lose a few marks.And would saying "to suggest and conclude" be too assertive as a hypothesis test conclusion? Sorry I'm bombarding all these questions lol but all these mistakes are now piling up and I don't think I can get that A now.
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- 15-06-2016 14:55
(Original post by leaf3)
Oh damn I only used about half, would that be very detrimental? :/
Worst case scenario (I think, please remember I'm not an examiner xD) is you'd lose 1 for lack of specificity if your graph is too small. -
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- 15-06-2016 14:56
(Original post by Studious_Student)
Damn it, I didn't think I would be deducted marks...And would saying "to suggest and conclude" be too assertive as a hypothesis test conclusion? Sorry I'm bombarding all these questions lol but all these mistakes are now piling up and I don't think I can get that A now.
Conclude is a very assertive word, can you remember the whole sentence? If you can I can give you a better opinion there.
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