Session 1 & 2 of BA - Group G, Sumedha Singla

Today in BA class we studied about the analytical tool called SPSS i.e. Statistcal Tool for the Social Sciences. Many other tools are used such as:-

SAS

·         Minitab

·         R

·         S

·         GAMS

Data Sheet in SPSS contains Records.

   

 Records = Cases+Variables

Classification of Variables

·         Category – Have limited values. Eg. Nationality, months etc.

·         Continuous

ü  Continuous – No whole numbers, fractions allowed

ü  Discrete – No fractions, only whole numbers allowed

Classification of data

·         Nominal – Here numbers are only for namesake. No order is there. Eg. Mobile numbers, numbers written on the back of sportspersons.

·         Ordinal – These numbers have an order and cannot be assigned randomly. Eg. Number plates on cars, classifications of education.

·         Scale – This is to know the magnitude of difference. Eg. Salary, height, weight.

Classification of techniques

·         1^st Level (Frequencies, crosstabs, OLAP cubes)

ü  Univariate techniques. Eg. Pie charts

ü  Bivariate techniques. Eg. Correlation, T-test

·         2^nd level

ü  Multi-variate techniques

Then a class assignment was done in which our group’s null hypothesis was age at which people get married first are mostly black people (on the basis of race).

NOTE:

Ø  Null Hypothesis in case of cross tabs is always same i.e. – “No relation between the two variables”

Ø  It can be accepted or rejected based on the significance value of Chi – square test.

Ø  Chi – square test is performed to check the dependence of the two variables. If the significance value is less than 0.05 then there is significant relationship between the variables and hypothesis can be rejected.

By:-

Sumedha Singla

14114

Team G

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