Calculate the mean as an average for simple sets of discrete data [S3]

To calculate the mean of a set of discrete data, you must first sum up all the data points and then divide that total by the number of data points. For example, if we have a set of numbers such as 2, 3, 5, and 10, we would add these numbers together to get a total of 20. Since there are four numbers in this set, we would then divide the total by four to get the mean, which is 5 in this case. The mean is a measure of central tendency, providing an average value that represents the data set. It is a commonly used statistic that gives a general idea of where the middle of the data lies.

In the context of the provided text, which appears to be an excerpt from an educational resource by Buzzard Publishing for Key Stage 2, students are being taught how to find the mean of simple sets of data. The text includes various sets of numbers, symbols, and codes, which may represent different exercises or examples for students to practice this concept. The goal is to apply the process of calculating the mean to each set, reinforcing their understanding of how to find the average in various scenarios. This skill is fundamental in mathematics and is often applied in real-world situations where summarizing data is necessary.