estimate the value of beta, and define what this concept means and explain its uses. In addition, discuss what statistical problems you might face in estimating it, and what determines its value.

Date	Closing Stock Price (JD)	Market Index (Points)
January	2.0	1000
February	2.2	1100
March	2.5	1280
April	2.1	1010
May	1.9	995
June	1.8	900
July	2.0	990
August	2.5	1300
September	2.1	1005
October	2.5	1300
November	2.6	1600
December	2.8	1800