American three meter diver, Abigail Johnston earned a score of 324.75 in the semi-final round of the 2016 Olympics. She earned 302.85 in the final round of the Olympic competition. Calculate the absolute and relative change in her scores from the semi-final round to the final round of the 2016 Olympic diving competition.

Then we can conclude that we have a decrease of 20.9 points from the score in the semifinal round compared to the score in the final round in 2016.

And we can interpret this as a decrease of 6.44 % from the semifinal score compared to the final score.  

Step-by-step explanation:

For this case let's define the following events first

i= represent the score for the semifinal in 2016. This value was 324.75 (initial value)

f = represent the score for the final round in 2016. This value was 302.85 (final value)

We can calculate the absolute change with the following formula:

And if we replace we got:

So we can conclude that we have a decrease of 20.9 points from the score at the semifinal round to the score at the final round in 2016.

Now for the relative % of change we can use the following formula:

And if we replace we got:

And we can interpret this as a decrease of 6.44 % from the semifinal score compared to the final score.  

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linear pair postulates