IGCSE/GCSE/O & A Level/IB/University Student Forum
Qualification => Subject Doubts => IGCSE/ GCSE => Math => Topic started by: ashisonline on May 16, 2009, 07:19:43 pm
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This is a question from the spec. paper 2009...about the bar height of the histogram...what do you do after you find the frequency density?
Thanks!
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Draw the histogram!
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ERM, no, you're not supposed to draw...
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umm theres no such question :-\
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This is a question from the spec. paper 2009...about the bar height of the histogram...what do you do after you find the frequency density?
Thanks!
He didnt ask For histrogram,
he asked for cumilative frequency
However, if u want to find the height then use this ratio
F.d=Frequency divided by ClassWidth
and usually height equals the to the F.D
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Yeah for the cumulative frequency, but when I find the FD, that's right but it's not the final answer...?
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could any1 explain wat is sheer
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ok ashisonline 4 dat ques u dont need 2 bother bout FD tell me wat ques ur stuck on so i can help.
n theigstudent well shear is type of a transformation like enlargement. It has a scale factor n stuff. itz rely hard 2 explain n i myself get confused wid it. but du u want any particular help wid shear tell me so i ll try 2 help. gud luck.Take care
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Could any1 explain 4 me the nth term??
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yes al noor. but du u hv problems wid finding da nth term wen ders a constant difference or wen da 1st difference is diff but da 2nd diff is da same?
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ok ashisonline 4 dat ques u dont need 2 bother bout FD tell me wat ques ur stuck on so i can help.
n theigstudent well shear is type of a transformation like enlargement. It has a scale factor n stuff. itz rely hard 2 explain n i myself get confused wid it. but du u want any particular help wid shear tell me so i ll try 2 help. gud luck.Take care
maths pap june04
Q8 a vi answers is sheer but how do u come to know
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Frequency
class with(difference between two numbers = Frequency density
After that you draw a scal in the y axis for the frequency density and on the x axis you put the class widths e.g 30 to 40
You then draw the bars.
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yes al noor. but du u hv problems wid finding da nth term wen ders a constant difference or wen da 1st difference is diff but da 2nd diff is da same?
Actually all of it if u can
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Actually all of it..plzz if u have time ???
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maths pap june04
Q8 a vi answers is sheer but how do u come to know
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LOL theigstudent i wish i cud help but i hv dat circled myself 2 sk da teacher if posible n if i get tym LOL. if u find da answer pls tell me cuz i myself soo confused bout shear usually. AAAAA lol i dnt understnd y da IG ppl luv 2 torture students :P anyway gud luck wid ur xams!
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i'll surely tell u
best of luck 2 u 2
could u just help me with
pap4 june04
Q8 c ???
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maths pap june04
Q8 a vi answers is sheer but how do u come to know
LOL theigstudent i wish i cud help but i hv dat circled myself 2 sk da teacher if posible n if i get tym LOL. if u find da answer pls tell me cuz i myself soo confused bout shear usually. AAAAA lol i dnt understnd y da IG ppl luv 2 torture students :P anyway gud luck wid ur xams!
[/quote]
Priceless can u please help in nth term i dont understand anything please
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Actually all of it..plzz if u have time ???
itz ok al noor. i ll. c on this forum u ll find many topics wer dey hv discussed this n given sum formulas but dey dnt go into my head. on da last minute i thnk dey r confusing. so i ll tell u my method.
1. wen u hv a sequence wer da 1st diff is da same eg. 3,5,7,9 den find da difference between dem n multiply it wid 'n' so da formula wud becum "2n" in this case as da diff is 2. den du 2n eg.in this case wen n=1, 2n=2x1=2 den find hw much u need 2 get 2 da first term. so in this case it wud b +1, 2 get 4rm 2 to 3(which is da 1st term). so da nth formula wud b 2n+1. den try this wid n=2 so 2x2+1= 5. which is ur second term. ryt....this is hw i du it itz very easy once u hv got it. but if u want formulas check sum other subject topics der hv been discussion on this.
ummm 4 da 2nd 1 wer u hv 2 find da nth term wen da 2nd diff is da same i hv my method 4 this 2 but again on this site der r formulas written 4 it. da 2d method is abit long but i ll help u. however u just tell me which method u find better. if u find da formulas more easy den go ahead wid dat but if u find my method ok den tell me, i ll try 2 explain da 2nd method. gud luck.
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Actually all of it..plzz if u have time ???
itz ok al noor. i ll. c on this forum u ll find many topics wer dey hv discussed this n given sum formulas but dey dnt go into my head. on da last minute i thnk dey r confusing. so i ll tell u my method.
1. wen u hv a sequence wer da 1st diff is da same eg. 3,5,7,9 den find da difference between dem n multiply it wid 'n' so da formula wud becum "2n" in this case as da diff is 2. den du 2n eg.in this case wen n=1, 2n=2x1=2 den find hw much u need 2 get 2 da first term. so in this case it wud b +1, 2 get 4rm 2 to 3(which is da 1st term). so da nth formula wud b 2n+1. den try this wid n=2 so 2x2+1= 5. which is ur second term. ryt....this is hw i du it itz very easy once u hv got it. but if u want formulas check sum other subject topics der hv been discussion on this.
ummm 4 da 2nd 1 wer u hv 2 find da nth term wen da 2nd diff is da same i hv my method 4 this 2 but again on this site der r formulas written 4 it. da 2d method is abit long but i ll help u. however u just tell me which method u find better. if u find da formulas more easy den go ahead wid dat but if u find my method ok den tell me, i ll try 2 explain da 2nd method. gud luck.
I reall understood the first difference thankz ;D ;D
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ummm glad 2 help so du u want me 2 tell u my method of finding 2nd difference?
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i'll surely tell u
best of luck 2 u 2
could u just help me with
pap4 june04
Q8 c ???
LOL sorry 2 help late. ya ofcourse i can help wid dat. ummm 4 dat u hv 2 no da base vectors den u can answer da ques. du u no dem?
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yeah sure please tell me ur way
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i'll surely tell u
best of luck 2 u 2
could u just help me with
pap4 june04
Q8 c ???
LOL sorry 2 help late. ya ofcourse i can help wid dat. ummm 4 dat u hv 2 no da base vectors den u can answer da ques. du u no dem?
nope could u plz explain
n thnxxxxx a lllllooooottttt 4 being so vvvvvvv helpful :) ;) :D
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nope could u plz explain
n thnxxxxx a lllllooooottttt 4 being so vvvvvvv helpful :) ;) :D
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LOL thnkz but u help others 2 so thnku 4 bein such a helpful persun. ya sure i ll explain theigstudent no worries.
ok c. 4 each transformation ders a matrix which r called base vectors. so according 2 wat da transformation is u hv 2 write down da base vectors. u hv 2 learn da base vectors by heart though dats da bad part. LOL but itz ok. only problem is u no dat matrixes involve like a huge double bracket hw du u show it on da comp? pls temme if u hv any idea so i can help. :)
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yeah sure please tell me ur way
i ll noor but can i du it tom cuz it ll take a long tym 2day. i hope u inderstand thnkz but tom 4 sure definitely. cya
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yeah sure please tell me ur way
i ll noor but can i du it tom cuz it ll take a long tym 2day. i hope u inderstand thnkz but tom 4 sure definitely. cya
oKI I ADDED YOU ON MY EMAIL PLEASE TELL ME OKI
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yeah sure please tell me ur way
i ll noor but can i du it tom cuz it ll take a long tym 2day. i hope u inderstand thnkz but tom 4 sure definitely. cya
u R SUCH A HELPFUL PERSON THANKZ SOO MUCH
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can any one draw the histogram for may/june 2005 Q7 part c ? please