Jakebert Posted February 17, 2010 Report Share Posted February 17, 2010 Hi,I've got a quick question: my math project is a test to see if there is a correlation between lung cancer and smoking. I have the number of smokers in Ontario from 1999 - 2004, ditto lung cancer victims. That only leaves me with 12 pieces of data, (i.e. numbers). Is that enough? Do I need MORE raw data? If not, how can I compensate for it in the analysis? Reply Link to post Share on other sites More sharing options...
Asheee Posted February 17, 2010 Report Share Posted February 17, 2010 I think you might need more, especially if you are going to use "complicated maths", such as the chi-squared test and linear regression. My maths teacher emphasised that we had heaps of data as the chi-squared test and other "complicated maths" are less accurate if not enough data is used. It's a good topic though!My suggestion is, maybe find data for different countries, or different areas of Canada? I compared birth rates, death rates, infant mortality rates and GDP of over 100 selected countries. For the simple maths, I randomly chose 4 LEDC countries and 4 MEDC countries, and for the more advanced maths, I used all 100 to give a more accurate result. 1 Reply Link to post Share on other sites More sharing options...
Thomas Obeuf Posted February 26, 2010 Report Share Posted February 26, 2010 I think you might need more, especially if you are going to use "complicated maths", such as the chi-squared test and linear regression. My maths teacher emphasised that we had heaps of data as the chi-squared test and other "complicated maths" are less accurate if not enough data is used. It's a good topic though!My suggestion is, maybe find data for different countries, or different areas of Canada? I compared birth rates, death rates, infant mortality rates and GDP of over 100 selected countries. For the simple maths, I randomly chose 4 LEDC countries and 4 MEDC countries, and for the more advanced maths, I used all 100 to give a more accurate result. Well, frankly, it's difficult. I don't know if he is using E-stat which gives free stats for stuff in Canada. Other statistics websites are hard to come across. Reply Link to post Share on other sites More sharing options...
Asheee Posted February 26, 2010 Report Share Posted February 26, 2010 Well, frankly, it's difficult. I don't know if he is using E-stat which gives free stats for stuff in Canada. Other statistics websites are hard to come across.See the reply I made to your post about the Maths IA. For data on countries around the world, there is the CIA factbook and Nation Master http://www.nationmaster.com/index.phpBoth websites helped me heaps in my Maths IA and for Geography. Reply Link to post Share on other sites More sharing options...
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