Calculate mean, median, mode, and weighted averages.
Number 1:
Number 2:
Number 3:
Total Weight:100
Mean (Average)
87.38
Median
88.50
Mode
None
Additional Statistics
Count
8
Sum
699
Minimum
78
Maximum
95
Range
17
Your Data Values (sorted):
📐 Formulas:
Mean (Average):
Mean = Sum of all values ÷ Count
Mean = (85 + 90 + 78 + 92 + 88 + 95 + 82 + 89) ÷ 8 = 87.38
Median:
The middle value when sorted (or average of two middle values)
Mode:
The value that appears most frequently
Weighted Average:
Weighted Mean = Σ(value × weight) ÷ Σ(weights)
Mean = Sum of all values ÷ Count
Mean = (85 + 90 + 78 + 92 + 88 + 95 + 82 + 89) ÷ 8 = 87.38
Median:
The middle value when sorted (or average of two middle values)
Mode:
The value that appears most frequently
Weighted Average:
Weighted Mean = Σ(value × weight) ÷ Σ(weights)
💡 What do these mean?
- Mean: The arithmetic average - add all numbers and divide by count
- Median: The middle value - useful when there are outliers
- Mode: The most common value - can be multiple values or none
- Weighted Average: Each value has different importance/weight
📝 Tips:
- For simple average: paste data from Excel, separate with commas, spaces, or new lines
- Use weighted average when values have different importance (e.g., exam scores with different weights)
- The median is less affected by extreme values than the mean
- Decimal numbers are fully supported