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 GuideRational numbers and operations Worksheet/Answer key

Rational numbers and operations Worksheet/Answer key

Rational numbers and operations Worksheet/Answer key

Rational numbers and operations

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 meanings of operations and how they relate to one another.

Understand the meaning and effects of arithmetic operations with fractions, decimals, and integers.

Compute fluently and make reasonable estimates.

Select appropriate methods and tools for computing with fractions and decimals from among mental computation, estimation, calculators or computers, and paper and pencil, depending on the situation, and apply the selected methods.

Develop and analyze algorithms for computing with fractions, decimals, and integers and develop fluency in their use.