Question

What is the SST for the data set (1,5), (2,9), (4,10)

Answer 1

i think that the answer is (4,10). hope it helped :)

Answer 2

14

Explanation:

SST = ∑ ( y − ȳ ) ² (ȳ = pronounced y bar is the mean of y values)

ȳ = (5+9+10)/3 = 24/3 = 8

∑ ( y − ȳ ) ² = ( 5 − 8 ) ² + ( 9 − 8 ) ² + ( 10 − 8 ) ²

= ( − 3 ) ² + ( 1 ) ² + ( 2 ) ²

= 9 + 1 + 4

= 14