Course Content

Learning Statistics with Python

Sample Variance

Now it's time to talk about sample variance. The definition is the same as for the population, but the formula varies.

**Formula**

Look at the example of variance rounded to the two decimal points for the column columns `'salary_in_usd'`

:

The variance of the column "salary_in_usd" is 5034932663.18

**Variance Key Note**

We can see that the variance of the column `salary_in_usd`

is large. The values in the column `salary_in_usd`

are spread out a lot. It is time to make an important note.

The larger the variance, the more the values are scattered.

Choose the one with a smaller variance among the graphs with an equal amount of observations and the same mean values.

Select the correct answer

Section 3.

Chapter 2