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.
Tension neck syndrome often causes fatigue, stiffness in the neck, neck pain or a headache pain from the neck. There are at least 2 tender areas or small, hard nodules, sometimes called trigger points.Often called neck tension or cervicobrachial syndrome, and sometimes mixed with trapezius myalgia.ension neck syndrome often causes fatigue, stiffness in the neck, neck pain or a headache pain from the neck. There are at least 2 tender areas or small, hard nodules, sometimes called trigger points.