# If the coefficient of determination for a data set is 0.25 and the SSE for the data set is 12, what is the SST?

$S S T = 16$
${R}^{2} = 1 - \frac{S S E}{S S T} \implies S S T = \frac{S S E}{1 - {R}^{2}} = \frac{12}{1 - 0.25} = 16$