Statistical Methods -II

The Term Regression was first used by

• Sir Francis Galton

• Karl Pearson

• Spearman

• Robinson

The Geometric mean between two regression coefficient is coefficient of correlation

• true

• false

A time series contain which of the following components

• secular trend

• seasonal variations

• cyclical variations

• all the above

Secular Trend represents

• long term variations

• seasonal variations

• cyclical variation

• trend line

trend refers to a long term tendency to decrease only

• true

• false

The most important factor causing seasonal variations are

• growth of population

• technological changes

• weather and social customs

• weather changes

Seasonal variations repeat during a period of

• 1

• 5

• 7

Trend can be measured by using

• graphic method

• moving average method

• least square method

• All the above

The rainfall in chennai that occured for five days in March 2003 shows ____ variation

• irregular

• cyclical

• seasonal

• trend

Cyclical Movements are due to

• short term variataions

• long term variations

• trade cycles