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Use this method.
A line whose slope is not constant or not defined. A curved line, a discontinuous line, a vertical line are some examples.
A simple method involves cutting a rubber band. Then the rubber band straight line is stretched over the scatter diagram and moved about until you feel that 50 % of your data is on one side of the temporary line and the other 50 % is on the other side of the line. Often the data is grouped such that a lot of points fall on the imaginary line of the rubber band and only a few oddballs are positioned well away from the line. We think of this method as the " Best Fit " method, using your judgment to decide the best fitting trend line.
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SONAR is more accurate than lead and line because it uses sound waves to measure distance underwater, which is not affected by factors like water turbidity or human error in readings. Lead and line rely on human estimation and physical measurement, making them less precise compared to SONAR technology. Additionally, SONAR can provide real-time data and detailed images of the underwater environment, whereas lead and line may only provide a single point of measurement.
The use of sonar is sending out sound waves out and by measuring the echo that comes back to determine if something is present. This is superior to the old way of lead line because the line had a much smaller range of picking up sounds.
Before sonar, the primary method used for underwater detection was hydrophones, which are underwater listening devices that could detect sounds emitted by vessels in the water. Additionally, visual inspection from submarines and ships, as well as the use of human divers, were also used to explore and detect underwater objects.
A scatter diagram will give a quick but rough extimate of the trend line - especially if there is a lot of variation about the trend. The least squares method will be more accurate.
Back in the day, sailors would head out on the ships and tie a lead sinker to a line to measure the ocean floor. Hope this helped!! ;)
Line of sight is a method that is used in schools. This method is to see a image of a object.
I'm positive it's Sonar with a curvy line on top of the n.
A halter and lead line. The halter is placed around the horse's head and the lead line is clipped on to the halter so you can lead your horse with the lead line. Lead line=Same as lead rope ;)
Centre line method:This method is suitable for walls of similar cross sections. Here the total centre line length is multiplied by breadth and depth of respective item to get the total quantity at a time. When cross walls or partitions or verandah walls join with main wall, the centre line length gets reduced by half of breadth for each junction. Such junction or joints are studied carefully while calculating total centre line length. The estimates prepared by this method are most accurate and quick.
straight line method
Henry Ford invented the assembly-line method of production
the straight line method