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Time Series

Theory and Formula


Question


Q1. Selling of sweets during the festive seasons causes which type of variation ?

(a) Seasonal Variations

(b) Irregular Variations

(c) Long term Variations

(d) Cyclical Variations

Solution. a
Seasonal Variations
Solution

Q2. In time series seasonal variations can occur with in a period of .

(a) 1 years

(b) 3 years

(c) 2 years

(d) 4 years

Solution. a
1 years
Solution

Q3. "A time series consists of data arranged chronologically" . This is according to

(a) Ya-lun-chou

(b) Spiegel

(c) Croxton and cowden

(d) Kenny and keeping

Solution. c
Croxton and cowden
Solution

Q4. In additive time series model which assumption is to be made ?

(a) There is no assumptions to be made for this model

(b) The four components are dependent of one another

(c) The three components , trend , seasonal and cyclical depends on irregular

(d) The four components are independent of one another

Solution. d
The four components are independent of one another
Solution

Q5. The methods for finding seasonal variations are

(a) Simple average methods

(b) Ratio to trend method

(c) Link relative method

(d) all of these

Solution. d
all of these
Solution