Meaning of Chebyshev's bias | Babel Free

Definitions

1. The phenomenon that most of the time, there are more prime numbers of the form 4k + 3 than of the form 4k + 1 up to n.
2. The phenomenon that if a is a quadratic residue modulo q and b is a quadratic nonresidue modulo q, then π(x;b,q)>π(x;a,q) occurs more often than not

CEFR level