Analizzatore Distribuzione Voti — Formula
## How to Calculate Class Average
The class average (mean) is the sum of all scores divided by the number of students.
### Formula
**Average = Sum of Scores / Number of Students**
**Standard Deviation = sqrt(Sum of (Score - Mean)^2 / N)**
The standard deviation tells you how spread out the scores are. A smaller SD means students performed more uniformly.
The class average (mean) is the sum of all scores divided by the number of students.
### Formula
**Average = Sum of Scores / Number of Students**
**Standard Deviation = sqrt(Sum of (Score - Mean)^2 / N)**
The standard deviation tells you how spread out the scores are. A smaller SD means students performed more uniformly.
Esempio Risolto
Six student scores: 85, 72, 91, 68, 77, 88.
- Total: 85 + 72 + 91 + 68 + 77 + 88 = 481
- Average: 481 / 6 = 80.2
- Highest: 91, Lowest: 68
- Variance: ((4.8^2 + 8.2^2 + 10.8^2 + 12.2^2 + 3.2^2 + 7.8^2) / 6) = 72.8
- Standard deviation: sqrt(72.8) = 8.53