The first quartile (Q 1) is defined as the middle number between the smallest number and the median of the data set.The second quartile (Q 2) is the median of the data. Use the median to divide the ordered data set into two halves. 2  If the median is a datum (as opposed to being the mean of the middle two data), include the median in both halves. 3  The lower quartile value is the median of the lower half of the data.
Many people associate shaky hands with Parkinsonâs disease, but the most common cause of shaking hands is actually essential tremor. Essential tremor is the most common neurologic disorder affecting adults, but itâs not well understood.
Unsteady Gait. The term âGaitâ means walking pattern and unsteady gait is the condition of walking abnormally. Abnormal gait results from number of causes like injury on the brain, spinal cord, injury caused to the legs and even trauma to the inner ear. Certain medical conditions like Parkinsonâs disease, Guillain Barre Syndrome, and multiple sclerosis can cause unsteady gait.