**definitions of statistics**

- It tells us statistics is the art of learning from data which includes collection of data, analysis of data, presentation of data, and then, drawing conclusions from data.
- we are going to look at how you collect data So, that is one of the main things which we will do.
- Some of the graphical techniques that you would learn are bar charts, pie charts, histograms, stem leaf plots etcetera.
- The measures of central tendency; namely, mean, median and mode and the measures of variation; namely, range, variance, standard deviation.
- statistics is the art of using data to draw conclusions.
- So, you want to infer something from data.
- this lays the playground for you to go next level which is inferential statistics.

**What do I mean by building block to understand inferential statistics?**

- We motivate this through a small introduction to the probability theory.
- When we go to probability theory, we start by what we mean by permutation and combinations.

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