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26 August, 23:00

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

14

42

25

9

+4
Answers (1)
  1. 26 August, 23:16
    0
    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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