11. A method for providing hiring recommendations of agents within a call center, comprising: receiving into a call center, a voice sample collected from a candidate agent via a handset; gathering via a speech recognition server the voice sample from the candidate agent, wherein the server comprises a central processing unit, memory, an input port that receives the voice sample from the handset, and an output port; measuring via a spectrum analyzer device within the voice sample voice characteristics comprising at least one of pitch, range of resonance frequencies of vowel, average resonance frequency of particular vowels, spectral tilt, breathiness, creakiness, nasality, speed of words, pause duration and intonation and comparing the voice characteristics from the voice sample with at least one graph comprising voice characteristics for two or more populations of a trait, which are each represented by a curve; assigning a score to the candidate agent by identifying at least a portion of the voice characteristics from the voice sample on the graph based on the comparison, assigning a numerical value to each identified voice characteristic from the voice sample based on the comparison, and summing the numerical values for the identified voice characteristics as the score; identifying by the server one of the populations to which the candidate agent belongs for that trait based on the assigned score; and providing by the server a recommendation for hire within the call center for the candidate agent based on the assigned score and the identified population.
11. A method for providing hiring recommendations of agents within a call center, comprising: receiving into a call center, a voice sample collected from a candidate agent via a handset; gathering via a speech recognition server the voice sample from the candidate agent, wherein the server comprises a central processing unit, memory, an input port that receives the voice sample from the handset, and an output port; measuring via a spectrum analyzer device within the voice sample voice characteristics comprising at least one of pitch, range of resonance frequencies of vowel, average resonance frequency of particular vowels, spectral tilt, breathiness, creakiness, nasality, speed of words, pause duration and intonation and comparing the voice characteristics from the voice sample with at least one graph comprising voice characteristics for two or more populations of a trait, which are each represented by a curve; assigning a score to the candidate agent by identifying at least a portion of the voice characteristics from the voice sample on the graph based on the comparison, assigning a numerical value to each identified voice characteristic from the voice sample based on the comparison, and summing the numerical values for the identified voice characteristics as the score; identifying by the server one of the populations to which the candidate agent belongs for that trait based on the assigned score; and providing by the server a recommendation for hire within the call center for the candidate agent based on the assigned score and the identified population. 16. A method according to claim 11 , further comprising: storing a list of candidate agents recommended for hire and candidate agents not recommended for hire.