Assignment 4: Calculate both the linear (unweighted) and A-weighted total sound pressure levels for the following octave-band data: 31.5 Hz 63 Hz 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz 78 dB 67 dB 65 dB 56 dB 48 dB 40 dB 37 dB 36 dB 25 dB
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
Assignment 4:
Calculate both the linear (unweighted) and A-weighted total sound pressure levels for the following octave-band data:
|
31.5 Hz |
63 Hz |
125 Hz |
250 Hz |
500 Hz |
1 kHz |
2 kHz |
4 kHz |
8 kHz |
|
78 dB |
67 dB |
65 dB |
56 dB |
48 dB |
40 dB |
37 dB |
36 dB |
25 dB |
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