Inside a vase there are $7$ red balls and $7$ blue balls. We choose a ball from the vase at random.

We are asked to calculate what is the probability that we take a red ball out of the vase.

Let's start by drawing the number line and marking the numbers $0$ and $1$.

Let's look at the data we have.

In the vase there are $7$ red balls and $7$ blue balls, that is, in total there are $14$ balls.

We have a probability of $50$ percent of getting a red ball out of the vase, i.e. half, we will either get a red ball or we will not get a red ball (i.e. we will get a blue ball).

In other words, if we want to mark the probability of getting a red ball out of the vase we will do it exactly in the middle between $0$ and $1$, i.e. at $0.5$.

**If you are interested in this article you may also be interested in the following articles:**

- Statistics
- Data collection and organization - statistical research
- Statistical Frequency
- Relative Frequency in Statistics
- Key Metrics in Statistics
- Probability
- Possible outcomes and their probability
- Frequency probability
- Relative frequency in probability
- Properties of probability

**In** **Tutorela's**** blog** **you will find a wide variety of mathematical articles**.