dessskris Posted November 27, 2011 Report Share Posted November 27, 2011 no they will not but the good teachers will know what the graph shape should be like without having to plot it on a software, so if you manipulate your graph, they might know. Reply Link to post Share on other sites More sharing options...
vivesta Posted November 27, 2011 Report Share Posted November 27, 2011 no they will not but the good teachers will know what the graph shape should be like without having to plot it on a software, so if you manipulate your graph, they might know. hmmm thanks... its a polynomial to 6 degree haha... i cant seem to input it properly into excel ... its the regression equation so it is meant 2 fit the data set well though Reply Link to post Share on other sites More sharing options...
dessskris Posted November 27, 2011 Report Share Posted November 27, 2011 well to be fair you can't input any equation on excel rofl so don't use excel!! use your GDC Reply Link to post Share on other sites More sharing options...
CamelCup Posted November 27, 2011 Report Share Posted November 27, 2011 I am nearly finished with my Gold Medal Heights math IA, and I was wondering if we need a conclusion and if yes, how would you make one good for a math IA? Reply Link to post Share on other sites More sharing options...
dessskris Posted November 27, 2011 Report Share Posted November 27, 2011 yes, just like for any academic paper, you do need a conclusion. some suggestions on what to put in the conclusion can be found here --> basically just summarise your investigation, restate the functions you modelled and which one is best etc Reply Link to post Share on other sites More sharing options...
Andreea.R Posted November 27, 2011 Report Share Posted November 27, 2011 We were told to make it as easy to explain as possible, so I suggest doing a linear equation for the first part; the r value is pretty high and there is no need to even use matrices. Ultimately, you can change it for the calculator model if you want, but by then the hard part would have been finished. Reply Link to post Share on other sites More sharing options...
mbraza Posted November 29, 2011 Report Share Posted November 29, 2011 What i got from my teacher is that its easier to use Linear function at the beginning. This is because when plotting the line of best fit, it automatically sit between the points (no ****) and provides a sort of average for you to go about. This also helps in getting values of 1940 and 1944...The next part is finding it analytically.. i used power rules.. if you substitute the values of y for say the year 1956 and 1968 and then scale the x values down like mentioned in other posts, you can use power rules to simplify equations etc. etc.Refining i found was not necessary after you have plotted your original line of best fit (for linear if your doing it) and analytically created equation. I used an exponential function and proved that it was better then polynomial logorithmic and quadratic using regression values from my calculator.Hope i was some help 1 Reply Link to post Share on other sites More sharing options...
vivesta Posted November 29, 2011 Report Share Posted November 29, 2011 heeey ive done all graphs etc and decided to use an exponential and log but im stuck with writing the parameter and constraints part do we hve to do these for all the models we trial? nd hooow?! Reply Link to post Share on other sites More sharing options...
dessskris Posted November 29, 2011 Report Share Posted November 29, 2011 heeey ive done all graphs etc and decided to use an exponential and log but im stuck with writing the parameter and constraints part do we hve to do these for all the models we trial? nd hooow?! okay example: if your function was: one of the constraints would be that so for your functions, what do you think would be the constraints? Reply Link to post Share on other sites More sharing options...
member112233 Posted December 9, 2011 Report Share Posted December 9, 2011 How many models are we expected to do analytically? Also does anyone know how to print screen what's on your calculator? Reply Link to post Share on other sites More sharing options...
dessskris Posted December 9, 2011 Report Share Posted December 9, 2011 How many models are we expected to do analytically?Also does anyone know how to print screen what's on your calculator?onedo you use TI? you need the cable and software (in the CD usually, or downloadable online). connect your calculator to your PC and in the software there's a capture screen button. Reply Link to post Share on other sites More sharing options...
rmd Posted December 10, 2011 Report Share Posted December 10, 2011 How do I start off for creating an equation to model the data analytically? is there a certain equation I should use? Reply Link to post Share on other sites More sharing options...
blink Posted December 10, 2011 Report Share Posted December 10, 2011 There are two specific parts that are bugging me. Notation and the Use of Technology. I'm never certain that my notation is correct, so would it be possible for someone to post all the correct notation relevant to this topic. Also, how do I implement the Use of Technology? I believe it goes beyond saying "I used my calculator to calculate this data". Thanks! Reply Link to post Share on other sites More sharing options...
Chris Kuno Posted December 10, 2011 Report Share Posted December 10, 2011 How do we plot the data table? Because when we skip the years 1940 and 1944, the table gives an unrealistic representation of an increase. Does anyone have any suggestions? Labeling 1932 1, 1936 2 etc. Reply Link to post Share on other sites More sharing options...
greemeenmachine Posted December 10, 2011 Report Share Posted December 10, 2011 how many analytical and regression models should i test, recommended wisei know there isn't a 'correct' number but just would like to know an approximate so i don't overdo or underdo by too muchthanks!!you're only asked to create 3 models:1. one analytically for the data from the first table2. one technologically for the data from the first table3. one modified from either function 1 or 2 for the data from the second tableso, the answer to your question is one by hand and one from calculator.Desy Glau,1. When they refer to "your equation" are they referring to the equation created analytically or the equation found with technology?2. How would I create an equation to the sixth power?3. Could you please explain what they mean by possible constraints and parameters?Thank you! like many people on here my teacher did not do an adequate job preparing us for this ia! Reply Link to post Share on other sites More sharing options...
dessskris Posted December 11, 2011 Report Share Posted December 11, 2011 How do I start off for creating an equation to model the data analytically? is there a certain equation I should use? you need to first choose what kind of function you want to model. then state its general form and then solve for the constants by plugging in values of x and y. There are two specific parts that are bugging me. Notation and the Use of Technology. I'm never certain that my notation is correct, so would it be possible for someone to post all the correct notation relevant to this topic. Also, how do I implement the Use of Technology? I believe it goes beyond saying "I used my calculator to calculate this data". Thanks! you kidding me? you think we don't have a life huh? basically just make sure your notations are similar to those you can find on your textbook. for example usually they put f(x)=... and not f<x>: ... and you shouldn't use x^2, you should use you know stuff like that. basically when you use your calculator to generate your second function it's already use of technology. How do we plot the data table? Because when we skip the years 1940 and 1944, the table gives an unrealistic representation of an increase. Does anyone have any suggestions? Labeling 1932 1, 1936 2 etc. plot the data just the way it is. I don't get what you mean by unrealistic representation or by labelling 1932 1 etc Desy Glau, 1. When they refer to "your equation" are they referring to the equation created analytically or the equation found with technology? 2. How would I create an equation to the sixth power? 3. Could you please explain what they mean by possible constraints and parameters? Thank you! like many people on here my teacher did not do an adequate job preparing us for this ia! 1. you may choose the one which fits better 2.use matrices 3.not completely sure but afaik it's basically the limitations. not sure though. Reply Link to post Share on other sites More sharing options...
Alice Wang Posted December 11, 2011 Report Share Posted December 11, 2011 The second part of the question states that you have to use technology to find another function that models the data, how do you do it on the calculator. I have already inputted the data, can the calculator automatically create a function that best fits for you?go to statgo to calcchose one ie. linear (ax+b)click L1 (click 2nd then number 1)click comma (above number 7)click L2click commaclick vars (to the left of CLEAR)go to y-varsgo to functionsclick y1click enterclick graph Reply Link to post Share on other sites More sharing options...
astro97 Posted December 11, 2011 Report Share Posted December 11, 2011 My teacher told me to do trial and error for each variable like a,b, and c to find the equation for a function. is this a valid method to finding the function analytically? Reply Link to post Share on other sites More sharing options...
kurokami Posted December 11, 2011 Report Share Posted December 11, 2011 OK the first data plot I found to be cubicBut how do I write the intro and conclusion to it...?I saw examples with BMI where they just explain what BMI is and stuff but I cannot write an intro Reply Link to post Share on other sites More sharing options...
blink Posted December 12, 2011 Report Share Posted December 12, 2011 There are two specific parts that are bugging me. Notation and the Use of Technology. I'm never certain that my notation is correct, so would it be possible for someone to post all the correct notation relevant to this topic. Also, how do I implement the Use of Technology? I believe it goes beyond saying "I used my calculator to calculate this data". Thanks! you kidding me? you think we don't have a life huh? basically just make sure your notations are similar to those you can find on your textbook. for example usually they put f(x)=... and not f<x>: ... and you shouldn't use x^2, you should use you know stuff like that. basically when you use your calculator to generate your second function it's already use of technology. Thanks, I'm not sure how you were offended since I was simply asking someone to state what is the correct notation. Like U(n) for series and sequences...I apologize though. Reply Link to post Share on other sites More sharing options...
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