Time series consists of data arranged

(a)

Statistical methods

(b)

Chronologically

(c)

Order oftheir occurrence

(d)

increasing or decreasing order

Seasonal variations are __________

(a)

Selling of umbrellas in rainy season

(b)

cool drinks in summer season

(c)

Prices of electronic gadgets

(d)

Sugarcane in Pongal

The components used in the time series y = T + S + C + l are __________

(a)

seasonal

(b)

secular

(c)

trend value

(d)

original value

The methods of measurements of trends are __________

(a)

Graphic

(b)

semi averages

(c)

least squares

(d)

control charts

Seasonal variations can be measured when the data are available in season wise __________

(a)

weeks

(b)

days

(c)

months

(d)

Quarters