Answer:
The coefficient of determination is: C. 0.43
Step-by-step explanation:
The provided information is:
SST = 140.58 and SSE = 80.42
The coefficient of determination is determined by formula:
Thus, coefficient of determination is closest to 0.43
You want to use the distributive property, i.e. the possibility to distribute a multiplication to both terms of an sum/subtraction.
In this case, if you think of 395 as of 400-5, you have
And you can use the distributive property to write
Both of these multiplications are easy to perform in your mind: