If no correlation exists between the variables, the points appear randomly scattered on the coordinate plane. If a large correlation exists, the points concentrate near a straight line. Scatter plots are useful data visualization tools for illustrating a trend. If the vertical (or y-axis) variable increases as the horizontal (or x-axis) variable increases, the correlation is positive.
Whiplash Whiplash, a severe neck injury, can cause stiffness and pain in the neck, headache, dizziness, and more. Aortic stenosis Aortic stenosis is a condition of the heart causing shortness of breath, dizziness, or chest pain.
In some cases, neck pain is caused by structural problems in the neck, such as with the muscles and joints of the vertebrae. Examples include arthritis, problems with the discs between the vertebrae and whiplash injuries. As expected, neck conditions commonly cause neck pain that may spread to the back and shoulders.