PARTICIPATION ACTIVITY 5.3.4: Coefficient of determination. A researcher examines how well the amount of hemoglobin (Hb) in blood can predict packed cell volume (PCV). Use the analysis of variance table below to answer the following questions. sum_sq F PR(>F) Hb 0. 008725 1.0 37.321988 0.000053 Residual 0. 002805 12.0 NaN NaN Run example 1) What is the explained variance? Type as: #.###### Correct 0.008725 0.008725 Check Show answer The explained variance is given by the sum_sq for Hb, which is 0.008725 2) What is the total variance? Type as: #.#### Incorrect 0.000053 The total variance is the sum of the explained variance and unexplained variance. Check Show answer 3) What percent of the variance in PCV can be explained from the variance in Hb? Type as: ##.#% Correct 75.7% 75.7% The percent variance in PCV explained by the variance in Check Show answer Hb is the coefficient of determination and can be computed as follows. R' = explained variance total variance 0.008725 0.008725 + 0.002805 0.757 - 75.7%