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Alex73 [517]
3 years ago
12

What is the sST for the data set (1, 5), (2, 8), (4, 14)? 14 42 25 9

Mathematics
1 answer:
ohaa [14]3 years ago
7 0

Answer:

42

Step-by-step explanation:

SST = ∑ ( y − ¯ y ) ² (¯ y = mean of y values)

¯ y = (5+8+14)/3 = 27/3 = 9

∑ ( y − ¯ y ) ² =  ( 5 − 9 ) ² +  ( 8 − 9 ) ² +  ( 14 −9 ) ²

=  (  − 4 ) ² +  (  − 1 ) ² +  ( 5 ) ²

= 16 + 1 + 25

= 42

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