Mayfield High School coursework

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xxxxxangiexxxxx
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#1
Report Thread starter 17 years ago
#1
Hiya people. I am in year 11 and doing this dreaded Maths courseowrk that you are all doing. Is anyone doing the relationship between weight and amount of tv watched? If you are then can you please tell me what other graphs can you do? i have choosen 50 random people and then 25 males and 25 females but now im stuck for ideas. Anyone got any ideas?
By the way, if anyone needs any help with their coursework feel free to email me or reply. Ill try and help the best i can.
Cyas all soon
Luv Angie xxxxx :P
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xxxxxangiexxxxx
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#2
Report Thread starter 17 years ago
#2
hi, can someone plzzzzzzz reply
or do the poll
it will only take like 2 seconds.
plz i need help!
angexx
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Unregistered
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#3
Report 17 years ago
#3
well i have got to do mayfeild high and i think height and weight would be the best but im doing av houres of tv a week and iq bye i need desperate help today and can find it aaaarrrggghhhhh!!! thnx anyways tony im a mental case take no notice of me i tlk to my self a lot i supose
bye tony
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Unregistered
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#4
Report 17 years ago
#4
Guessing you've done scatter graphs so far. You could display the info in a cumulative frequency (boys, girls and both) also show in 3 boxplots on the same scale and compare the five points ie highest, lowest, median, upper and lower quartile. To really extend for higher marks - do it all over again with a different sample to see if the results are similar.
Hope this helps.
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xxxxxangiexxxxx
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#5
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#5
hiya , thanx that helped.
do u know anything about box and whisker plots?
any useful tips / websites?
Much appreciated
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#6
Report 17 years ago
#6
Originally posted by xxxxxangiexxxxx
hiya , thanx that helped.
do u know anything about box and whisker plots?
any useful tips / websites?
Much appreciated
Try www.coursework.info
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Unregistered
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#7
Report 17 years ago
#7
These show a five point summary
Lowest value (0%)
Lower quartile (25%)
Median (50%)
Upper quartile (75%)
Highest value (100%)
They show you the shape of the data, normal should give a symmetrical box, if the box is to the left you have high values to explain, if it is to the right you have low values to explain.
Really you want to compare the difference between 2 or 3 boxplots (say 1. boys and girls, 2. boys, 3. girls) see if they have similar distributions (boxs are in similar places) Hope this isn't confusing!
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xxxxxangiexxxxx
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#8
Report Thread starter 17 years ago
#8
hey, does anyone know how to do the mean, median and range? Im really stuck on how to do them.
Please reply if you know what any of them are.
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JB^
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#9
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#9
Do you want the definition of those?!?!

Mean is the sum of all the values divided by the total number of values.

Median is the middle value when you place the numbers in ascending order.

Range is the highest number minus the lowest.

e.g.

7, 5, 3, 6, 8, 1.

Mean = (7 + 12 + 3 + 6 + 8 + 1) / 6 = 5

Median = 5.5

Range = 7 (8 - 1)

I doubt this is what you're asking, so I probably sound incredibly patronising. If not then, you're welcome
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xxxxxangiexxxxx
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#10
Report Thread starter 17 years ago
#10
Do you want the definition of those?!?!

Mean is the sum of all the values divided by the total number of values.

Median is the middle value when you place the numbers in ascending order.

Range is the highest number minus the lowest.

e.g.

7, 5, 3, 6, 8, 1.

Mean = (7 + 12 + 3 + 6 + 8 + 1) / 6 = 5

Median = 5.5

Range = 7 (8 - 1)

I doubt this is what you're asking, so I probably sound incredibly patronising. If not then, you're welcome


hmmmmmm, im not to sure how u got 5.5 out of them numbers as the median i think it was.
please explain if you want.
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JB^
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#11
Report 17 years ago
#11
1, 3 , 5, 6, 7, 8.

There's 6 numbers. The middle value is between the third and fourth, because this leaves 3 values either side. 5.5 is between 5 and 6.

If you had 7 numbers it would be the 4th value.

The formula to calculate which is

n + 1
2

where n is the number of values.
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xxxxxangiexxxxx
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#12
Report Thread starter 17 years ago
#12
ok, so what if there was numbers like
1,2,4,13,13,18,23,23,23,24,26,28 ,39,49,51
so the middle value is 23 and 23. what would the median be then?
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JB^
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#13
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#13
well to find the average (mean) of 2 numbers...

23 + 23 divided by 2 = 23 !

that's the mean
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xxxxxangiexxxxx
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#14
Report Thread starter 17 years ago
#14
1,2,4,13,13,18,23,23,23,24,26,28 ,39,49,51

so what would be the median?
i thought the range was the average.
god im so confused!
sorry for be a pain in the backside!!
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#15
Report 17 years ago
#15
does anyone know what a box and whisker plot is?
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Sephiroth2
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#16
Report 17 years ago
#16
Originally posted by Unregistered
Try www.coursework.info
I hate this poor excuse which sugar coates the fact that you dn't knoW!!!!!!!! If you know tell the poor girl ok and be up front with her.

i can't help you on this sorry!
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Unregistered
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#17
Report 17 years ago
#17
Try this website
http://www.delanet.com/~mws/box.html

Apologies to sephiroth for giving a website, I do know how to do these - but not how to draw on a bboard.

edders: fixed link
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Unregistered
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#18
Report 17 years ago
#18
does anyone know what the interquartial range is?
also box and whisker plots? coursework.info is no good!
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xxxxxangiexxxxx
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#19
Report Thread starter 17 years ago
#19
has that delanet website got anything about interquartial stuff??
iv nearly done my coursework now, been doing graphs, tallys, and trying to work out cumulative frequency is!
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Unregistered
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#20
Report 17 years ago
#20
hiya all,
jus wanted to say thanx for all the help that anyone gave me. Just one more thing though, in the conclusion what should I write about?? i was thinking writing about median, mode etc. but the teacher said not too cos i wudnt get any marks.
any ideas what to put in?
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