2. FEATURES OF CLASSIFICATION
1. Data is classified into various groups.
2. Classification is done on the basis of some
similarity
3. Classification may be on actual or some
notional basis
4. Classification is done in such a manner that
unity in diversity is presented.
3. OBJECTS OF CLASSIFICATION
1. TO END DIFFICULTY AND COMPLEXITY
2. TO POINT OUT SIMILARITIES &
DISSIMILARITIES
3. SAVING OF LABOUR & TIME
4. PROVIDING COMPARATIVE STUDY
5. LOGICAL ARRANGEMENT
6. BASIS OF TABULATION
7. When the collected data is classified
according to the qualities then it is known
as classification according to attributes/
qualities.
Ex. According to gender, eyes, honesty, etc.
1. CLASSIFICATION ACCORDING TO
ATTRIBUTES/ QUALITIES
8. It can be of two types:
I. DICHOTOMY CLASSIFICATION
II. MANIFOLD CLASSIFICATION
9. 1. DICHOTOMY CLASSIFICATION
When classified on the basis of one quality.
Ex. Literate-illiterate, male- female, etc.
2. MANIFOLD CLASSIFICATION
When classified on the basis of two or more
than two qualities. Ex. Population classified
on the basis of sex & religion.
10. It is also known as classification according
to variables or quantitative classification.
The data is classified on the basis of
quantity.
2. CLASSIFICATION ACCORDING TO
CLASS INTERVALS
11. In the words of Prof. Connor, “if two
variable quantities can be arranged side
by side so that measurable difference is
that one corresponds with measurable
difference in the other, the result is said
to form a statistical series.”
MEANING OF STATISTICAL
SERIES
12. ON THE BASIS OF QUALITY
1. TIME SERIES
2. SPATIAL SERIES
3. CONDITION SERIES
ON THE BASIS OF CONSTRUCTION
1. INDIVIDUAL SERIES
2. DISCRETE SERIES
3. CONTINUOUS SERIES
KINDS OF STATISTICAL SERIES
