Course Content

# The Art of A/B Testing

1. What is A/B testing?

The Art of A/B Testing

## Challenge: Descriptive Stats

We will remind you of some descriptive statistics:

*count*- the number of observations in the sample;*mean*- the sum of the values of all observations divided by their number;*std*- the square root of the variance, which characterizes the degree of deviation of the data from the average value of the sample;*median*- central value that divides the sample into two equal parts;*min*- the smallest sample value;*max*- the largest sample value.

# Task

In this task, you need to calculate descriptive statistics and display the result. Finding descriptive statistics is an important part of **A/B testing** because they provide summary information about the sample. We will use this information in the future.

- Import the
`pandas`

. - Read files.
- Calculate descriptive statistics.
- Concat the results of aggregations.
- Print the results.

Everything was clear?

Section 2. Chapter 3