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.
1 The eight-core, 16-thread IntelÂ® Coreâ¢ processor Extreme Edition is Intelâs first eight-core client processor.  This platform offers massive 16-thread performance and quad-channel memory for content creation, gaming and multitasking.