iCoachMath
STEM Excellence Series: Empowering the Next Generation
ARITHMETIC MEAN
Arithmetic Mean
Definition Of Arithmetic Mean
Arithmetic Mean of a set of numbers is the sum of the numbers divided by the number of items in the set.
More About Arithmetic Mean
Arithmetic mean is also called as average.
Arithmetic mean or average of a set of numbers 
is
given by 
= 
Video Examples: Arithmetic Mean
Examples of Arithmetic Mean
Arithmetic mean of three numbers 3, 6, and 7 can be calculated as: Arithmetic mean =
= 
= 
= 5.33
Solved Example on Arithmetic Mean
Ques: The prices of cheese pizza in five different pizza delivery shops are $5, $4, $6, $8, and $7. Find the mean of the prices.
Choices:
A. $6
B. $4
C. $7
D. $5
Correct Answer: A
Solution:
Step 1: The mean is the average of the prices.
Step 2: Average = 
Step 3: = 
[Substitute the values.]
Step 4: = 
[Add.]
Step 5: = 6 [Divide.]
Step 6: The mean price is $6.
Quick Summary
- Arithmetic mean is also called average.
- It is calculated by summing all values and dividing by the number of values.
\[ \bar{x} = \frac{\sum_{i=1}^{n} x_i}{n} \]
🍎 Teacher Insights
Use real-world examples, like student test scores, to illustrate the concept.🎓 Prerequisites
- Addition
- Division
- Basic Algebra
Check Your Knowledge
Q1: What is the mean of the numbers 2, 4, 6, and 8?
Frequently Asked Questions
Q: What is the difference between mean, median, and mode?
A: Mean is the average, median is the middle value when data is ordered, and mode is the most frequent value.