Given these observed times (in minutes) for four elements of a job, determine the observed time (OT) for each element. Note: the second element only occurs every other cycle. Element Cycle 1 Cycle 2 Cycle 3 Cycle 4 Cycle 5 Cycle 6
1 4.1 4.0 4.6 4.1 4.1 4.1
2 - 1.5 - 2.4 - 1.4
3 3.2 3.2 3.8 3.2 3.3 3.3
4 2.7 3.0 2.7 2.8 2.8 2.8

Element 1 = 4.17 Observed time

Element 2 = 1.77 Observed time

Element 3 = 3.33 Observed time

Element 4 = 2.8 Observed time

Explanation:

Calculation to determine the observed time (OT) for each element

Based on the information given we have 4 Element and 6 Cycle for Element 1,3 and 4 while Element 2 has 3 cycle

First step is sum up each element cycle i.e addition of cycle 1 to cycle 6

Element Cycle 1 Cycle 2 Cycle 3 Cycle 4 Cycle 5 Cycle 6

1. 4.1 +4.0 +4.6 + 4.1 +4.1 + 4.1 = 25

2. - 1.5 - 2.4 - 1.4 =(1.5+2.4+1.4)=5.3

3. 3.2 +3.2 +3.8 +3.2+ 3.3 +3.3= 20

4. 2.7 +3.0 +2.7 +2.8 +2.8+ 2.8 = 16.8

Now let find the Observed time by dividing the figure that was sum up for each of the element by the numbers of cycle that each element has.

OBSERVED TIME

Element Cycle 1 Cycle 2 Cycle 3 Cycle 4 Cycle 5 Cycle 6

1. 4.1 +4.0 +4.6 + 4.1 +4.1 + 4.1 = 25/6= 4.17 Observed time

2. - 1.5 - 2.4 - 1.4 =(1.5+2.4+1.4)=5.3/3=1.77 Observed time

3. 3.2 +3.2 +3.8 +3.2+ 3.3 +3.3= 20/6= 3.33 Observed time

4. 2.7 +3.0 +2.7 +2.8 +2.8+ 2.8 = 16.8/6=2.8 Observed time

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