The recording boxes on your chart should now look like this...

Date >> | 10/01 | 17/01 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|

Time >> | 13:00 | 13:00 | |||||||||

# | Characteristic | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |

1 | Blisters | 1 | |||||||||

2 | Scratches | 1 | |||||||||

3 | Overspray | ||||||||||

4 | Orange Peel | 1 | 3 | ||||||||

5 | Flotation | 2 | |||||||||

6 | Off Colour | ||||||||||

7 | Sags/Runs | 1 | 4 | ||||||||

8 | Gun Spits | ||||||||||

9 | Dirt | ||||||||||

10 | Dull Finish | 1 | |||||||||

Defects (c) | 6 | 8 | |||||||||

Sample Size (n) | 950 | 1175 | |||||||||

Proportion (u = c / n) | 0.006 |

Now (using the formula u = c / n)
calculate the value of *u* for this sample (rounded to 3 decimal
places).

Check your answer, and add the correct value to your chart before moving on.