Determination of R.1. Percentage. ∑ ▒ 〖, X 〗 ∑ ▒ 〖 y 〗 ∑ ▒, 〖 XY 〗 ∑ ▒, 〖 x ^ 2 〗 ∑ ▒, 〖 y ^ 2 〗.2. Calculates the covariance S_xy.3. Calculate the standard deviation of the S_x or X.4. Calculate the standard deviation of the S_y or y.5. Bring all values instead of in the formula r = S_xy / (S_x S_y).
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