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.
Wear gloves if you have poor circulation in your hands. Photo Credit gloves image by hazel proudlove from Fotolia.com. Several conditions can cause poor circulation in the hands and feet, ranging from decreased blood flow to polycythemia, diabetes or stress and anxiety, according to the University of Alabama.Blood vessels constrict in response to cold temperatures. The feet typically are affected first when nerve damage is present.everal conditions can cause poor circulation in the hands and feet, ranging from decreased blood flow to polycythemia, diabetes or stress and anxiety, according to the University of Alabama.