Hearing Loss Data
A study was carried in the Eastman Kodak Company which involved the measurement of hearing loss. Such studies are called as audiometric study. This data set contains 100 males, each aged 39, who had no indication of noise exposure or hearing disorders. Here, the individual is exposed to a signal of a given frequency with an increasing intensity till the signal is perceived.
data(hearing)
A data frame with 100 observations on the following 9 variables.
Sl_NoSerial Number
L500Observation for 500Hz in the left ear
L1000Observation for 1000Hz in the left ear
L2000Observation for 2000Hz in the left ear
L4000Observation for 4000Hz in the left ear
R500Observation for 500Hz in the right ear
R1000Observation for 1000Hz in the right ear
R2000Observation for 2000Hz in the right ear
R4000Observation for 4000Hz in the right ear
Jackson, J.E. (1991). A User's Guide to Principal Components. New York: Wiley.
data(hearing) round(cor(hearing[,-1]),2) round(cov(hearing[,-1]),2) hearing.pc <- princomp(hearing[,-1]) screeplot(hearing.pc,main="B: Scree Plot for Hearing Loss Data")
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