trung bình nhân
Definition
- Noun (Mathematics):
- Geometric Mean: A type of average. For two numbers, it is the square root of their product. For n numbers, it is the n-th root of the product of all n numbers.
Usage Examples
- Noun:
- Trung bình nhân của 4 và 9 là 6. (The geometric mean of 4 and 9 is 6.)
- Trong thống kê, trung bình nhân thường được dùng để tính tỷ lệ tăng trưởng. (In statistics, the geometric mean is often used to calculate growth rates.)
Advanced Usage
- The geometric mean is particularly useful for sets of numbers that are multiplicative or involve percentages and indices, such as growth rates in finance or population studies. It is always less than or equal to the arithmetic mean (trung bình cộng).
Variants and Related Words
- Trung bình cộng (n): Arithmetic mean (the sum of numbers divided by the count).
- Trung bình điều hòa (n): Harmonic mean (the reciprocal of the arithmetic mean of the reciprocals).
- Căn bậc hai (n): Square root.
Synonyms
- Geometric average
- Geometric mean
Related Concepts
- Average / Mean: A single value representing the central tendency of a set of numbers.
- Multiplicative Average: Another descriptive term for the geometric mean, highlighting its calculation based on the product of numbers.