Mean. The mean of an observation variable is a numerical measure of the central location of the data values. It is the sum of its data values divided by data count. Hence, for a data sample of size n, its sample mean is defined as follows:Similarly, for a data population of size N, the population mean is:ean. The mean of an observation variable is a numerical measure of the central location of the data values. It is the sum of its data values divided by data count. Hence, for a data sample of size n, its sample mean is defined as follows:
Names of territorial origin were common, a man would have had the surname Langford if he was from the village of Langford. An example of this is Osm' de Langeford who was recorded in the Pipe Rolls for Wiltshire in 1130. The name Osm' de Langeford means Osm' from the village of Langford.
Framed Surname History and Coat of Arms. The origins of the Lofton name lie with England's ancient Anglo-Saxon culture. It comes from when the family lived in the village of Lofthouse during the reign of King Alfred in 900 AD. This place-name was originally derived from the Old Norse words lopt meaning loft and hus meaning house. Therefore the original bearers of the Lofton surname were dwellers of the loft house. CITATION[CLOSE]