Understanding Normal Distribution Tables: A Step-by-Step Guide

Normal distribution tables, also known as z-tables or standard normal distribution tables, are used to determine the probability that a value falls within a certain range. These tables provide a wealth of information about the normal distribution and can be easily referenced for quick calculations.

To get started with using a normal distribution table, you first need to identify the corresponding area on the table. In this case, let's say we are looking for an area of 0.09. The first step is to look at the left side column of the table and find the value that corresponds to one decimal place of the z-score.

For example, if we have a z-score of 1.09, we would look up the value corresponding to 1 on the top row of the table. Once we've found this value, we can then use it to determine the percentage of values that fall below (or to the left) of the z-score.

In this case, the corresponding area is 0.8621, which translates into 86.21% of the standard normal distribution being below (or to the left) of the z-score. With a normal distribution table, you can easily see these values and make quick calculations.

Overall, understanding how to use a normal distribution table is an essential tool for anyone working with data or statistics. By following these simple steps, you can quickly discover everything you need to know about normal distribution and start making accurate predictions and calculations.