QDS Variance Quick Tester

Plug in radii and observed fractional scatter σ(H)/H to compare against the QDS law σ(H)/H = A · R^−p. Defaults: A = 0.017, p = 0.35.

1. Kernel parameters

A (amplitude, σ(H)/H at R=1 Mpc)

p (slope)

Tolerance (% difference allowed)

Tip: enter σ(H)/H in percent below (e.g. 3.4 for 3.4%).

Radius R (Mpc)

Observed σ(H)/H (%)

#	R (Mpc)	Obs σ(H)/H (%)	QDS pred (%)	Δ (%)	\|Δ\| vs tol

No points yet. Add a few radii and observed scatters to see how QDS behaves.

Line = QDS prediction. Points = your observed σ(H)/H. X-axis is radius (Mpc), Y-axis is percent.