Which one of the following statements is NOT correct related to line-of-balance schedule ?

Explanation:

Line of Balance Method (LOB):

• LOB is a resource-driven scheduling system for projects with repetitive activities. 
• It is a very visual method of representing a particular type of project.
• The main objective is to find the required resources for each activity. The project is developed according to a schedule with a continuous flow of activities.
• The LOB diagram provides a vivid overview of the project´s overall status by quantitatively representing the cumulative completion of activities associated with a level of planned number at a given time. 
• It graphically reveals any imbalance that suggests a deviation from the plan due to the actual uneven progress of activities and promptly enables management to focus on assessing the deviation quantitatively.
• The use of a combination of sloping lines, bars, and blocks to sequence operations, and then space and resource conflicts are quickly identified is a key feature of Line of Balance (LOB) scheduling.
• The LOB method is based on the number of required units to be delivered at the end of the project. This number of units is what sets the production rate of the overall project. 
• The rate of production of every activity should be higher than the rate of delivery so that the project is finished within the projected time.
• The rates of production of the different activities are obtained by analyzing data from previous projects, or by experience of line managers and workers in similar activities. 
• The LOB diagram is developed with the assumption that the production rates are uniform in each activity. But the rates between different activities may be different

​Regarding the line-o-balance schedule statement (3) is not correct. Hence the correct answer is option (3).