The mean, also known as the average, is a measure of central tendency that represents the sum of a set of numbers divided by the number of elements in the set. It is commonly used to describe the typical value of a set of numbers.

To calculate the mean of a set of numbers, you add up all the numbers and then divide by the total number of values. The formula for calculating the mean is:

Mean (μ) = (Sum of all values) / (Number of values)

Let's calculate the mean for the following set of numbers: 5, 8, 12, 15, 20.

Mean (μ) = (5 + 8 + 12 + 15 + 20) / 5

Mean (μ) = 60 / 5

Mean (μ) = 12

- Understand the concept of mean as a measure of central tendency.
- Learn the formula for calculating the mean: Mean (μ) = (Sum of all values) / (Number of values).
- Practice calculating the mean for different sets of numbers.
- Understand how outliers can affect the mean.
- Learn how to interpret the mean in the context of a given data set.

Remember that the mean is just one way to describe the central tendency of a set of numbers, and it's important to consider other measures of central tendency, such as the median and mode, to fully understand the distribution of the data.

Study GuideNumbers and percents Worksheet/Answer key

Numbers and percents Worksheet/Answer key

Numbers and percents Worksheet/Answer key

Numbers and percents

Number and Operations (NCTM)

Understand numbers, ways of representing numbers, relationships among numbers, and number systems.

Work flexibly with fractions, decimals, and percents to solve problems.

Understand and use ratios and proportions to represent quantitative relationships.

Compute fluently and make reasonable estimates.

Develop, analyze, and explain methods for solving problems involving proportions, such as scaling and finding equivalent ratios.