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Descriptive statistics and inferential statistics are the two main branches of statistics.

Inferential statistic is all about making a connection between sample and population. Because. we usually do not have access to the whole population, we make some estimations at the level. of the sample, like calculating the mean of age in the sample, and would like to be able to say.

?It is the mathematical science of making decisions and drawing conclusions from data in situation of. uncertainty.? Definition by Croxton and Cowden: ing to Croxton and Cowden statistics may be defined as. ?Statistics is the science of collection, presentation, analysis and interpretation of numerical data.?

The two main branches of statistics are descriptive statistics and inferential statistics.

The five words population, sample, parameter, statistic (singular), and variable form the basic vocabulary of statistics. You cannot learn much about statis- tics unless you first learn the meanings of these five words.

Consider statistics as a problem-solving process and examine its four components: asking questions, collecting appropriate data, analyzing the data, and interpreting the results.

We begin by introducing two general types of statistics: Descriptive statistics: statistics that summarize observations. Inferential statistics: statistics used to interpret the meaning of descriptive statistics.

They are: (i) Mean, (ii) Median, and (iii) Mode. Statistics is the study of Data Collection, Analysis, Interpretation, Presentation, and organizing in a specific way.