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This video contains everything you would ever want to know about Histograms. IIt tells you what the difference is between a Histogram and a Bar Chart. It looks at how to draw a Histogram and how to read a Histogram. It looks at what intervals are and why we label the axes the way we do. It is the best video on Histograms and is part of the Year 8 series of Mathematics.
This video looks at the two main measures of spread which we use in Mathematics. The first is the Range, which we have already seen in a previous video,. We look at why the range is not a good measure of spread when there are outliers. We then move onto look at the Interquartile Range (IQR) which is a much better way to look at how far out the data is spread by looking at the middle 50% of the data. This video is part of the Year 8 Mathematics course and even talks about Vegemite!
This video looks at the language which is needed to be able to describe data which has been gained from a survey. It describes terms such as population, sample, sample size, proportion and bias. It moves on to look at how we can describe the shape of the data using symmetrical and skewed and how to tell if the data is bi-modal. An example is used to describe how to read histograms to answer questions.
This video looks at the Year 8 topic of two-step experiments. It looks at what one step experiments are and then expands it. It looks at drawing tables for sample spaces and finding probabilities.
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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.