$.$ The average ratings for each business unit comparing only the manager and self$-$ratings. Calculate

and show the difference between these ratings.

$$ If using a table, turn off the column and row subtotals.

$$ If using a bar or column chart, show the difference in the tool tip. $($Note that a tool tip only appears

when you hover a specific section of a visual and can be added in the fields tab under $$Tooltips$.)$

$$ Hint: The difference can be calculated using the difference between two nested

$$CALCULATE$$ functions that are used to calculate the average rating of $$Self$$ and of

$$Manager$.$