Lesson-8.markdown

@@ -34,7 +34,7 @@ The filter have the form:
 The filtered gyro data is shown in the lower part of the figure below.
 ![Upper part: Gyro measurements with both motors turned on at full power. The car was places on the back and did not move. Lower part: Filtered gyro measurements with an exponential filter.](https://gitlab.au.dk/rene2014/lego/raw/master/Lesson8/Images/GyroDataNoMove.png)
 
-The filtered clearly removes a lot of the spikes in the data. This might make it easier to see when a plateau is entered. The `alpha` value used here is 0.7.
+The filter clearly removes a lot of the spikes in the data. This might make it easier to see when a plateau is entered. The `alpha` value used here is 0.7.
 
 ## Gyro measurements on a plateau