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This video is the first which deals with time series for the Further Maths Units 3 and 4 course. An introduction to all the key terms is vital to be able to write a meaningful report relating to time series. Hence, I introduce cycles, seasonality, random fluctuations, outliers, structural changes, trends and much more. VCAA questions are also completed from past papers which relate directly to this thoery. There are 5 videos in this series.
This is the second video in a series of 5 which looks at Time Series for the Further Maths Units 3 and 4 course. To be able to find trends in data it makes sense to smooth the random fluctuations. This can be done in a number of ways. The first I look at is through mean smoothing. I look at both odd numbers of data and even numbers of data items using examples for each. I conclude the video, like all others, by solving some VCAA questions which relate directly to this content area.
This is the third video in the series which deals with Time Series for the Further Maths Units 3 and 4 course. Building on the knowledge gained in the previous two videos, I now look at how to smooth data using moving medians. I look at 3-, 5- and 7 moving medians. A range of examples are used from the Cambridge textbooks and the video concludes with solutions to some of the more recent VCAA exam questions. Watching this video will see your exam scores rocket!
This is the video everyone has been waiting for and requesting. Seasonal Indices is finally here and it's everything you need to know to help you understand what a seasonal index is, what you use them for and how to interpret them. Referencing the work to that already covered on smoothing we look at how we can reduce seasonality to enable us to find trends and fit trend lines. This video is longer than most, but packs a punch and has lots of worked examples. Another video will follow this one with lots of VCAA questions.
This is the final video in this series for Further Maths Units 3 and 4. It brings all the work together for TIme Series and shows how we can use the knowledge gained in previous videos to fit trend lines and then forecast. VCAA exam questions are used as examples alongside the Cambridge Further Maths text book.
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These are the videos which are available in each chapter. You will notice that some are free and some are for subscribers only. Making and hosting these videos costs a little bit of money. To help pay for the hosting fees I have no choice but to hide some of the videos and make them for subscribers only.