Standard normal distribution + z scores

5 important questions on Standard normal distribution + z scores

What is the normal distribution rule?

34%, 12,5% 2,5%

Mean of zero and standard deviation of 1

How can we go from an arbitrary normal distribution to a standard normal distribution?

By standardizing -> any data set can be converted into a data set that has the mean of 0 and a standard deviation of 1 -> to do this you have to calculate the z score

What do you do with the z-score formula?

You change the scales but form of distribution stays the same
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What does the large portion in the appendix mean?

The value of the body part

What does the small portion in the appendix mean?

The value of the tail part

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