Which characteristics of tsunamis are true?

a. they cause the ocean to briefly drain away from the shore.
b. they can travel as fast as 500 miles per hour.
c. they occur a day or two after an earthquake.
d. they are measured by how far they travel.

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