Prediction of one variable from another variable is

  1. Prediction of one variable from another variable is*

a. Coefficient of variation

b. Coefficient of regression

c. Coefficient of correlation

d. Coefficient of determination

2. Indicators for air pollution are

a. Sulphur dioxide, lead, particulate matter

b. Carbon dioxide, hydrogen sulphide, lead

c. Sulphur dioxide, hydrogen sulphide, carbon monoxide

d. Sulphur dioxide, smoke and particulate matter

1.Correct Answer B*

Ans. b. Coefficient of regression

Ref: K Park, 25th ed Page no. 916

•To predict the value of dependent variable from independent variable

2.Correct Answer D

Ans. d. Sulphur dioxide, smoke and particulate matter

Ref: K Park, 25th ed Page no. 798

Air Pollution (Chemical Indicators)

•Sulphur dioxide (Best indicator)

•Smoke or soiling index

•Grit or dust measurement

•Coefficient of haze

•Air pollution index