  The Kolmogorov stochasticity parameter (KSP) is applied to quantify the
degree of randomness (stochasticity) in the temperature maps of the Cosmic
Microwave Background radiation maps. It is shown that, the KSP for the WMAP5
maps is about twice higher than that of the simulated maps for the concordance
\LambdaCDM cosmological model, implying the existence of a randomizing effect
not taken into account in the model. As was revealed recently, underdense
regions in the large scale matter distributions, i.e the voids, possess
hyperbolic and hence randomizing properties. The degree of randomness for the
Cold Spot appears to be about twice higher than the average over the mean
temperature level spots in the sky, which supports the void nature of the Cold
Spot. Kolmogorov's parameter then acts as a quantitative tracer of the voids
via CMB.
