# Mean temperature

The mean is $\bar{x}$, measured in °C.

$$
\bar{x} = \frac{1}{n} \sum_{i=1}^{n} x_i
$$

Here $x_i$ is temperature reading $i$ and $n$ is the number of readings.

| Reading | Temperature (°C) |
| --- | --- |
| 1 | 18.2 |
| 2 | 18.6 |
| 3 | 18.4 |

The sum is 55.2 °C and $n = 3$, so the mean is 18.4 °C.

## Check the rendering

Inspect inline and display math, then change one reading and recalculate
the mean. These are static examples, not a live calculator.