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.
Neck pain and stiffness thatâs associated with headache and fever can be a sign of meningitis (an infection of the membranes surrounding your brain and spinal cord). Meningitis is a serious disease, and you should seek immediate medical treatment if you or your child are experiencing these symptoms.