Immunoglobulin E (IgE) is an antibody that is produced by the body's immune system in response to a perceived threat. It is one of five classes of immunoglobulins and is normally present in the blood in very small amounts. IgE is associated with allergic responses, including asthma, and to a lesser degree with immunity to parasites.
Dow jones index average and median historical return based on 1 year , 5 year, 10 year and 20 year are shown in the below table. Dow Jones yearly return are also shown in the graph From 1921 to 2016.Djia had 7.4% percent return on average from 1966 to present.
Due to limitations of acquiring historical data, the data set of the Dow Jones Average used in this analysis consists of monthly closing prices beginning in January 1901, the sixth 20-year cycle. To use the data effectively and prepare a forecast, I compare the progression of the current 20-year cycle (2001-2020) with the previous five 20-year cycles, beginning in 1901.