Organisation of Data — Economics STD 11 Commerce — Question

According to Horace Secrist, "A series as used statistically may be defined as things or attributes of things arranged according to some logical order." According to Prof. Connor, "If two variable quantities can be arranged side by side so that measurable difference in the one corresponds with measurable difference in the other, the result is said to form a statistical series." On the Basis of Characteristics:

1. Time Series: When series of values of some variable which is represented according to successive points in time is called time series. In such a series, data are represented with reference to a time period which can be a year, week, month or day. An example is given below:

Production in a cloth mill:

Year	2005	2006	2007	2008	2009	2010
Production (in 000 meters)	15	27	58	72	134	140

OR
Rainfall in a week

DAY	Mon	Tue	Wed	Thu	Fri	Sat	Sun
Rainfall in cm	15	27	17	14	54	64	10

2. Spatial Series: A series of values of some variable which is represented according to area under investigation i.e. geographical division of the universe is called spatial series. An example is given below:

Production of wheat in different states of India in 2010

States	Punjab	Haryana	Maharashtra	U.P.	Bihar	Orissa
Production (in 000 tonnes)	1500	2700	580	720	134	140

3. Condition Series: A series of values of some variables which is represented according to condition which may be expressed in quantitative terms is called condition series. An example is given below:

	Grade
	A	B	C	Total
Boys	13	25	11	49
Girls	7	20	6	33
Total	20	45	17	82