Chart Plotting Exercise (8)

The weights of the five items sampled at each of the next five hours of Shift A were:

	03:00	04:00	05:00	06:00	07:00
ITEM 1:	174g	173g	175g	176g	170g
ITEM 2:	177g	178g	175g	177g	175g
ITEM 3:	177g	180g	174g	178g	178g
ITEM 4:	176g	172g	173g	178g	177g
ITEM 5:	175g	176g	174g	175g	173g

Using these figures, continue to record the data, and carry out the calculations to complete the recording boxes below. Once complete click the button to check your answers.

Remember these formulae:

Sum x = x1 + x2 + x3 + x4 + x5
Mean = Sum x / n (where n is the sample size)
Range = highest value - lowest value

Date	01/04	01/04	01/04	01/04	01/04	01/04	01/04
Time	01:00	02:00	03:00	04:00	05:00	06:00	07:00
1	177	176
2	176	178
3	178	178
4	177	180
5	175	175
Sum	883	887
Mean	177	177
Range	3	5