Introduction to Normal Distribution and z-score
This is a PowerPoint presentation that can be used to introduce normal distributions. The lesson covers what a normal distribution is and then talks through how to convert to a standardised normal distribution (find the z-score). The idea is to encourage the students to understand exactly what they are finding, rather than just using a formula and reading from a table. This means that they will be able to interpret questions and adapt to new situations more easily.<br />
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The presentation discusses what we mean by standard deviation and how it applies to a normal distribution. We then look at how we can find the z-score and how this helps us find the probability. We then look at a couple of examples, where we use a table to find the probability from the z-score and vice-versa. I use a 'tail end' table of z-scores but the lesson can easily be adapted to other forms of tables.<br />
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I spent quite a lot of time putting the presentation together to use with my Engineering apprentices so hopefully someones else can also find it useful. I must also give credit to www.mathsisfun.com (https://www.mathsisfun.com/data/standard-normal-distribution.html) where I found a lot of the images used in the presentation.