Consistency Score (Var-Index)
Measure player consistency in fantasy football using coefficient of variation. Identify safe floors vs high-ceiling players.
📊 Player Stats
📖 Interpretation
Enter weekly scores and click calculate to see the consistency analysis.
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What Is the Consistency Score (Var-Index)?
The Consistency Score (Var-Index) measures how consistent a fantasy football player's weekly scores are. It uses the coefficient of variation (CV) — the ratio of standard deviation to mean — to quantify volatility.
- Low CV (< 15%): Elite consistency — rock-solid floor
- Medium CV (15% – 25%): Very consistent — reliable starter
- Moderate CV (25% – 35%): Some boom/bust potential
- High CV (35% – 50%): Volatile — high ceiling, low floor
- Very High CV (> 50%): Extremely volatile — DFS play
How the Consistency Score Is Calculated
📐 Formula
Coefficient of Variation (CV) = (Standard Deviation ÷ Mean) × 100
Lower CV = More consistent
* Uses sample standard deviation (divides by n-1) for better real-world accuracy with small sample sizes.
📊 Worked Example
Scores: 18.5, 22.0, 15.3, 31.0, 19.5
Mean: 21.3
Std Dev (sample): 5.8
CV: (5.8 ÷ 21.3) × 100 = 27.2%
Rating: Moderately Consistent
📊 Data Sources & Disclaimers
Sources:
- User-input weekly scores
- Statistical formulas (mean, standard deviation)
Last Updated:
August 24, 2026
Disclaimer:
This is a fan-built analytical tool. Not affiliated with NFL or NFLPA.