Z Formula Explained
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More examples of how to use zscores and the normal curve. In this video we discuss what are z scores and how to calculate using a formula, which uses the mean standard deviation. On example of working a normal distribution word problems, involving lower cut off point.
I also use the zformula and ztable. Version of table used in this vi. Learn how to find z scores and probability in this video example.
You can see all my videos on channel page http///mathmeeting. I show how to find the appropriate z value (using standard normal table) when calculating a confidence interval. This tutorial shows how to calculate areas/probabilities using the cumulative standard normal tables.
