Data Science

Tried to address all comments/suggestions by reviewer Sophia.
So, here's just one fairly straightforward way this could be a little better:

```
def to_s
  [ display_table_header, 
    display_table_body,
    display_footer
  ].join
end

def display_table_footer
  [ "Max-Conversion: ".yellow          + @confidence.max_subject,
    "Chi-Square-Value: ".yellow        + chi_square_value_msg,
    "Chi-Square-Significance: ".yellow + chi_square_significance_msg,
    "Chi-Square-Test: ".yellow         + distinction_msg,
  ].join("\n")
end
```

... something like that anyway.