Approximately What Percentage of the Earth's Crust Is Composed of Oxygen

question 93

Multiple Choice

Approximately what percentage of the earth's crust is composed of oxygen?

• A)≈ 5%
• B)≈ 40%
• C)≈ 50%
• D)≈ 75%

---

Definitions:

Partial Regression Slope Coefficients

Quantitative measures in multiple regression models that represent the rate of change in the dependent variable for one-unit change in the predictor variable, holding other variables constant.

Coefficient of Multiple Determination

A statistical measure that represents the proportion of variance in a dependent variable that can be predicted from multiple independent variables.

Regression Sum of Squares

A measure of the variability explained by the regression model, calculated as the sum of the squared differences between the predicted values and the mean of the dependent variable.

Total Sum of Squares

A statistical measure representing the total variation or spread of a dataset from its mean, used in various statistical models to assess the explanatory power of predictors.