Does sacking a football manager affects results?

Topic: Does sacking a football manager affects results?

Paper details:

Math IB Internal Assessment Standard Level

(criteria for good grade)
http://mrsmithsibwebsite.weebly.com/uploads/1/2/3/9/12396431/math_hl_exploration_rubric.pdf

(sample)- should follow this structure more or less

http://xmltwo.ibo.org/publications/DP/Group5/d_5_matsl_tsm_1205_1/pdf/example10_e.pdf

This is were I got the idea of the question, it could be useful
Does Sacking a Manager Improve Results?