Question

The lines which coincide or lie on top of each other are called coincident lines. In the case of parallel lines, they are parallel to each other and have a defined distance between them. ... On the other hand, perpendicular lines are lines which intersect each other at 90 degrees.


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Answer 1

Answer:

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Answer 2

The standard deviation is defined as the positive square root of the mean of the square deviations taken from the arithmetic mean of the data. The standard deviation is in the same units as the units of the original observations...

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