The following scatterplot displays the number of people exposed to 65 dB or more of railway road noise at night versus number of people exposed to 65 dB or more of industrial road noise at night for 65 agglomerations in England in 2011.

a) What happens to the number of people exposed to industrial road noise as the number of people exposed to railway road noise increases?
b) Is there a linear association between the two variables?
c) Do you think industrial and railway noise have symmetrical distributions?

Transcribed Image Text:

Number of people exposed to 65 dB or more of Industrial noise at night 4000 3000 2000 1000 0 0 0 0 00 10000 20000 Number of people exposed to 65dB or more of Railway noise at night 30000