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.
Inflammation, muscle stiffness, or injuries can lead to tension neck syndrome. Unless neck pain is caused by trauma or an accident, neck pain is not a serious condition. But if the pain worsens within a few weeks and is accompanied by other symptoms, seek medical attention immediately.