Chart Plotting Exercise (6)

It is now 02:00, and time for the second sample. The next five items you take off the production line weigh:

Cover 1: 176g
Cover 2: 178g
Cover 3: 178g
Cover 4: 180g
Cover 5: 175g

Now using these values, complete the second column of the Chart below. You should remember that:

Date 01/04 01/04          
Time 01:00 02:00          
1 177          
2 176          
3 178          
4 177          
5 175          
Sum 883          
Mean 177          
Range 3