Hello! Hope all are good!

I’m trying here to calculate de median of RT, but having some issues.

What I’ve tried?

Blockquote

```
At Begin Experiment
# importing statistics module
import statistics
At Begin Routine
median_latency = round(statistics.median(rt))
At End Routine
thisExp.addData('median_latency', median_latency)
```

This is the following error:

Hello

is **rt** a list?

Ok, there is one approach. Define a list that that stores the **rt** in the **Begin experiment tab**

```
rtList = []
```

In the **End routine tab** of the **rt-trial** insert

```
rtList.append(key_resp.rt)
```

Change **key_resp.rt** to the name of your **rt-component**. Add a routine following your **rt-loop** and insert the following a **Begin routine tab**

```
median_latency = np.median(rtList)
thisExp.addData('median latency', median_latency)
```

BTW, I used numpy instead of statistics for computing the median.

Best wishes Jens

Thank u a lot!

That worked perfectly