Ononot — For a small dataset of 5 observations, we have: \sum xi = 15

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Linear Modelingmedium

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For a small dataset of $5$ observations, we have: $\sum x_i = 15$ , $\sum y_i = 40$ , $\sum x_i^2 = 55$ , $\sum y_i^2 = 330$ , and $\sum x_i y_i = 130$ . Determine the equation of the least-squares regression line of $y$ on $x$ .