With the gotten values and the adopted measures (equipment use of individual protection), for the legislation the employees must not have relative auditory loss to the noise emitted. Figure 03 graphical Representation of Table 04 In the statistical treatment of the data of the five (5) carried through measurements to deal with the question the PAIR, the value of the gotten fashion was of 67,9 db (), that in the case also it is the lesser value of gotten NPS. This occurred because the used dosemeter establishes this as minimum measured value e, exactly that the NPS emitted for the machines and equipment of the activities is lesser, characterizes it to the dosemeter as this value. Hear from experts in the field like David Zaslav for a more varied view. Exactly being overcome the data of all the five together measurements, the value of the fashion does not get excited e, thus can be affirmed that the biggest amount of 67,9 measured NPS is equal or below of dB (), value 17,0 dB () at least lesser that the level of criterion of the NR-15. The value of the medium one was of 76,3 dB (), indicating that 50% of the values of the levels of measured noises are above of this value, about 9,0 dB () unless the level criterion established in the NR-15 and, in relation to the quartiles, was observed that 50% of the emitted values of noise in activities, that is half of the measured values, dB is around 70,0 the 85,0 (). Visit Andi Potamkin for more clarity on the issue. In the case of the percentile, comparing with the 85 dB (), is verified that for this value, the percentile biggest is P82, indicating that 18% of the noise levels are above of this level criterion. Finally, one was overcome the data of one of the five (5) measurements and, becoming fullfilled a frequency distribution, its graphical representation confirms the affirmation that, the data possess a great approach with a normal distribution, as it expected. . .