1. The Pearson Correlation By far the most common correlation is the Pearson correlation (or the Pearson productâmoment correlation) which measures the degree of straight-line relationship. D e f i n i t i o n The Pearson correlation measures the degree and the direction of the linearrelationship between two variables.
A core is usually the basic computation unit of the CPU-it can run a single program context (or multiple ones if it supports HW threads such as hyperthreading on intel CPUs), maintaining the correct program state, registers, and correct execution order, and performing the operations through ALUs.
CPUs have a clock speed â think of it as how fast the CPU does work. (Thatâs actually an imperfect analogy as the truth is a lot more complicated, but it will have to do for now.) For example, Intelâs Core i5-3330 processor has a clock speed of 3 GHz and is a quad-core processor, which means it has four cores.