Recent content by RufusDawes

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    Is There Hope for Me to Excel in Math While Working Full-Time?

    Hard to explain, I did it out of interest, but now that I think about it I don't feel comfortable discussing what I found interesting as I think it will just make me sound stupid. I actually studied more than 3 weeks. 3 weeks was when I started dedicating all of my time to it but I stupidly...
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    Is There Hope for Me to Excel in Math While Working Full-Time?

    Thanks. I too agree with your post. Yep. I know that now. I did well on all of the assignments so I guess I did convince myself of what was not true. I really, really wanted to do well and put in literally all of my free time for 3 week or so before the exam and I did not do well. So it is...
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    Is There Hope for Me to Excel in Math While Working Full-Time?

    I work full time as a Data Analyst. I took a degree in statistics, well an add on degree really doing 8 units. I've done Calc II Calc III Programming Statistics I, II, III and Experimental Design and Statistical Modelling The problem is because I work full time I never get to study and...
  4. R

    A question about the cross product as related to matrix multiplication

    I forgot about that assumption. Now it makes sense.
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    A question about the cross product as related to matrix multiplication

    Yes yes but no one ever actually understands what anything means, which is why you have such high drop out rates in later year mathematics courses. For a system a linear equations it doesn't make sense, because you're multiplying a row by a column.
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    A question about the cross product as related to matrix multiplication

    okay, so what if I were in grade 1 and didn't understand multiplication ? Do you have some examples ? Because when I looked at some examples for vector cross product it started to make some sense. Especially when they said it only exists in 3 dimensions.
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    A question about the cross product as related to matrix multiplication

    I understand that the cross product, in lay mans terms doesn't exist unless we're in 3 dimensions. When you multiply two matrices together I have been told you get something similar. I hear that this is because a matrix can be treated as a vector. So if we are talking about measurable...
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    Can Any Mathematical Expression Be Used for Regression Analysis in Excel?

    Awesome, thanks. I just went y= p.exp(rt)=where t is time r is a variable of interest and p is a constant. Plugged into into excel and then calculated MAPE and used solver to minimise it. If I wanted to include 3 or 4 variables to od a multiple regresson could I simply go : y=p*(...
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    Can Any Mathematical Expression Be Used for Regression Analysis in Excel?

    yes I was thinking to solve it numerically using an iterations of some small number yes my terminology will be off, sorry about that. I'm not an academic. the reason is that there is that over a to b the gradient is steep but from points c to d the gradient becomes shallow, which means...
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    Can Any Mathematical Expression Be Used for Regression Analysis in Excel?

    I notice that the examples always seem to talk about linear regressions, as in y=mx +c So how I understand this is that you get your sum of squared residuals and your parameters and you basically find the parameters which minimise the SSE. Would this mean, that you could essentially set up...
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    I've finally hit a wall with math

    Nah I know everything about life.
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    I've finally hit a wall with math

    There are always trades and traineeships. Get out of university while you're young. It can be a life ruiner.
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    Testing Exam Failure: Coping with Setbacks and Learning from Mistakes

    I think I just failed an exam :( Ok so I am realistic about my life. I know I'm pretty much a failure. Anyway I had a lot of luck about 4 years ago and got into a great job as a data analyst. It suits me 100% at this stage as I get to do things which interest me, write code ect, basically I...
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    What Does X'X Represent in Linear Algebra?

    Apparently it has something to do with a matrix.
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