The average variable cost of the second unit of output in Table 21.5 is

The principle of checks and balances is based on the notion that

Which of the following terms is defined as supported by scientific research l and knowledge of how children and develop? a. evidence-based practices b. ethical conduct c. advocacy d. culture competence

Match the item to the definition: indirect correlation, correlational research, correlational research, covary, pearson correlation coefficient, pearson correlation coefficient, direct correlation a. used to describe the relationship between two or more naturally occurring variables b. determines whether scores on the two variables covary c. whether two variables vary or change together d. denoted by the symbol "r" e. provides information about the sign (direction) and magnitude(strength) of the linear relationship. f. when the correlation is positiveg. when the correlation is negative