The range rule tells us that the standard deviation of a sample is approximately equal to one fourth of the range of the data. In other words s = (Maximum â Minimum)/4. This is a very straightforward formula to use, and should only be used as a very rough estimate of the standard deviation.
Often abbreviated as âDMEâ, durable medical equipment includes various types of walking aids, transfer equipment, bath safety and wheelchairs. As the name implies, this category must be manufactured and tested to be âdurableâ because patients who use this equipment rely on it to keep them safe and comfort.
Durable Medical Equipment. AliMedÂ® manufactures and distributes a wide range of top quality Durable Medical Equipment. This is the one spot you can find all of your Medical Supplies and durable medical equipment ranging from Wheelchairs; Wheelchair Accessories and Walkers to Cushions and Bed Safety Products.