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.
Symptoms & Treatment Related To Headaches And Neck Pain. A headache with neck pain may be related to muscles which refer pain to the head. We have discussed strain of the neck muscles and detailed how a muscle may radiate pain from the neck to areas of the head. A particular area located in the neck is most often related to headaches.