hearing {ACSWR}

Hearing Loss Data

Description

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.

Usage

data(hearing)

Format

A data frame with 100 observations on the following 9 variables.

Sl_No

Serial Number

L500

Observation for 500Hz in the left ear

L1000

Observation for 1000Hz in the left ear

L2000

Observation for 2000Hz in the left ear

L4000

Observation for 4000Hz in the left ear

R500

Observation for 500Hz in the right ear

R1000

Observation for 1000Hz in the right ear

R2000

Observation for 2000Hz in the right ear

R4000

Observation for 4000Hz in the right ear

References

Jackson, J.E. (1991). A User's Guide to Principal Components. New York: Wiley.

Examples

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")