What is the SST for the data set (1,4), (2,6),(4,11)?
2 answers:
Answer:
26
Step-by-step explanation:
SST = ∑ ( y − ȳ ) ² (ȳ = pronounced y bar is the mean of y values)
ȳ = (4+6+11)/3 = 21/3 = 7
∑ ( y − ȳ ) ² = ( 4 − 7 ) ² + ( 6 − 7 ) ² + ( 11 − 7 ) ²
= ( − 3 ) ² + ( - 1 ) ² + ( 4 ) ²
= 9 + 1 + 16
= 26
Answer: 26
Step-by-step explanation:
First Data: (4 - 7)^2
Second data: (6 - 7)^2
Third Data: (11 - 7)^2
So the SST is (4 - 7)^2 + (6- 7)^2 + (11 - 7)^2 = 9 + 1 + 16 = 26
Hope this helps! :)
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