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OCR MEI Statistics 1 (S1)

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Reply 80

George_

Original post by sreddy17

ye i did that i just wrote it! haha

Haha cool , sorry missed that ! :biggrin:

I had 4 minutes left, and I'd missed it out, and so I quickly wrote that down! :P

Reply 81

nicknickmac

Original post by sreddy17

first question did ppl just do 30/50 x 29/49 x 28/48

yeahh

Reply 82

George_

Original post by alex7892

What did you guys get for the revenue one for the governemt for the cars?
did you do 25/80 x 15000000 or whatever?
the x by 1000?

I guessed by doing 25/80 * 2.5million, then for some reason I multiplied by 1000 to get 781 million pounds :P

GUESSED totally.

Reply 83

toddyvedda

i stupidly miswrote the X~B thing wrong, but i got the right answer i hope with all the right workings out, would i lose a mark for doing that?

Also does the histogram have to start from where your data starts, or can it start from 0?

And would i lose a mark for only labelling it 'frequency density' without a unit?

I ****ed most of the paper up anyway, but i want to know if i've got 3 more marks to scrape a B :smile:

Reply 84

alex7892

Also what did you guys get for the two combinations question?

480?
then 480/3003 which cancels?

Reply 85

louci

Original post by alex7892

What did you guys get for the revenue one for the governemt for the cars?
did you do 25/80 x 15000000 or whatever?
the x by 1000?

got the same as uuuuuuu

Reply 86

username537823

Original post by alex7892

What did you guys get for the revenue one for the governemt for the cars?
did you do 25/80 x 15000000 or whatever?
the x by 1000?

x 2.5 million but yeah thats what i did

Reply 87

username537823

Original post by alex7892

Also what did you guys get for the two combinations question?

480?
then 480/3003 which cancels?

yes i did the combinations for the sections and then divided by the overall possibilities

Reply 88

toddyvedda

Original post by alex7892

Also what did you guys get for the two combinations question?

480?
then 480/3003 which cancels?

Oh ffs 9+6 is 15, not 14! yeah i would've got the same as you if i wasn't being so stupid :frown:

Reply 89

nicknickmac

Original post by sreddy17

yes i did the combinations for the sections and then divided by the overall possibilities

oh ****

do you think i'll drop a mark not for cancelling? also wasn't it 840 not 480? or have i screwed up loads :frown:

Reply 90

username537823

did ppl get 8 for expectation and something like 1.6 for variance.. cant remember exactly (for the probability distribution of the coins)

Reply 91

nicknickmac

Original post by sreddy17

did ppl get 8 for expectation and something like 1.6 for variance.. cant remember exactly (for the probability distribution of the coins)

yuppo

Reply 92

username537823

Original post by nicknickmac

oh ****

do you think i'll drop a mark not for cancelling? also wasn't it 840 not 480? or have i screwed up loads :frown:

nah, i just gave it as a decimal

Reply 93

nicknickmac

Original post by toddyvedda

Oh ffs 9+6 is 15, not 14! yeah i would've got the same as you if i wasn't being so stupid :frown:

omfg i did 14 as well :/ x

Oh infact, it was 5 questions from section A and 9 from section B, 14 is right :smile:

Reply 94

alex7892

Yes it was 840 just forgot the figures. Seem quite happy about the exam just made a mistake with the standard deviation and mean, must of been calculator issue. Would I still get follow through marks for this and the outlier question?

Reply 95

username537823

how did peoples histogram look?

Reply 96

louci

Original post by nicknickmac

omfg i did 14 as well :/ x

Oh infact, it was 5 questions from section A and 9 from section B, 14 is right :smile:

omg i was like ...............!!!!!!!!!!!!!!!!!

omg i though i put 14 and got it wrong omg !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

oh gosh i can breath again !!!!!

so it was 14 yeah?