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.
A Ms. Karena Wu , Physical Therapy, answered. Shoulder problems can cause neck pain and headaches because the shoulder and neck share the same muscles. Watch physical therapist Karena Wu discuss how weakness in the shoulder muscles can affect the entire area, causing neck tension and headaches. Helpful? 1 person found this helpful.