Understanding standard deviation and z score

Assignment Help Basic Statistics

Reference no: EM13106846

Please answer the following question:

- Explain thoroughly, the concept of standard deviation.

- How does range affect standard deviation?

- What is a z-score, and how do z-scores relate to the mean of a set of data?

- Generally speaking, how is the percentage of data which lies in between two z-scores calculated?

Reference no: EM13106846

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