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.
Cold Hands. Having cold hands at all times usually occurs due to decreased blood flow to the hands. Our bodies keep our hands warm primarily by regulating the blood flow that travels from the heart, down the arm, all the way to our fingertips. More blood to the hands means pink, warmer hands; less blood flow means colder and sometimes painful hands. causes Blood that flows into our hands usually travels by two arteries: the radial artery and the ulnar artery (Figure 1). Cold hands are caused when blood flow is decreased to the hand. This can happen with a number of things, including: Vasoconstriction