EducLevel	Region	Party
Higher	Mid	ABC
Upper Second	Mid	ABC
Lower Second	Mid	Independent
Higher	Mid	ABC
Upper Second	Mid	ABC
Lower Second	Mid	ABC
Upper Second	Mid	ABC
Upper Second	Mid	ABC
Higher	Mid	Independent
Upper Second	Mid	ABC
Higher	Mid	ABC
Higher	Mid	ABC
Higher	Mid	ABC
Higher	Mid	XYZ
Upper Second	Mid	XYZ
Upper Second	Mid	XYZ
Higher	Mid	XYZ
Upper Second	Mid	XYZ
Upper Second	Mid	XYZ
Lower Second	SouthEast	Independent
Lower Second	SouthEast	XYZ
Upper Second	Mid	XYZ
Upper Second	Mid	XYZ
Higher	Mid	XYZ
Upper Second	Mid	XYZ
Lower Second	Mid	XYZ
Upper Second	Mid	XYZ
Higher	Mid	XYZ
Higher	Mid	XYZ
Lower Second	NorthWest	XYZ
Upper Second	Mid	XYZ
Upper Second	Mid	XYZ
Upper Second	Mid	XYZ
Higher	Mid	XYZ
Lower Second	Mid	XYZ
Lower Second	Mid	XYZ
Higher	Mid	XYZ
Lower Second	Mid	XYZ
Upper Second	Mid	XYZ
Higher	Mid	XYZ
Higher	Mid	XYZ
Higher	Mid	XYZ
Upper Second	Mid	XYZ
Lower Second	SouthEast	Independent
Upper Second	Mid	XYZ
Higher	Mid	XYZ
Higher	SouthEast	Independent
Upper Second	Mid	XYZ
Lower Second	NorthWest	XYZ

In each of these cases, use an appropriate statistical test and explain your conclusions.

Following a recent General Election, a political analyst wishes to investigate the behavior of the voters with respect to their political preference. For this purpose, the analyst has collected data from a sample of 136 voters from different regions of the country. The data is included in the below table. For each voter, the data concerns his/her Level of Education, Region of Residence and Political Preference (candidate endorsed by Party ABC, candidate endorsed by Party XYZ or an Independent candidate). The analyst would like to check whether the following variables are associated or not: (a) Level of Education and Political Preference (b) Region of Residence and Political Preference (c) Region of Residence and Level of Education