Loading...
 
Read Edit History

Range and Quartiles

Range and Quartiles

Definition



Full text

The most simple is the range; the range measures the total spread of the variables, and is expressed as the lowest and highest value of your dataset (e.g. my sherds are between 5-200 mm thick). Like the mean, the range is seriously affected by extreme values, which would reduce its usefulness to give an impression of the spread of values. To counter that effect, you could use quartiles, which, like the median, divide the total amount of items in equal parts. This time, you do not break them in two halves, but in four parts (quartiles). Again, as with the median, disadvantages are that you have an easily influenced indication of range, and do not take into account the actual values themselves, just their ranked position.
Research topics: Software & Technology