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.
Other Disease Processes: Although neck pain is commonly caused by strain, prolonged pain and/or neurologic deficit may be an indication of something more serious. These symptoms should not be ignored. Spinal infection, spinal cord compression, tumor, fracture, and other disorders can occur. If head injury has been sustained, more than likely the neck has been affected too. It is wise to seek medical attention promptly.