Itai-itai disease (ã¤ã¿ã¤ã¤ã¿ã¤ç, itai-itai byÅ? ), (literally: ouch-ouch disease) was the first documented case of mass cadmium poisoning in the world in Toyama Prefecture, Japan in 1950. The cadmium poisoning caused softening of the bones and kidney failures.
Weighted grades are number or letter grades that are assigned a numerical advantage when calculating a grade point average, or GPA.
Grades are often computed using a weighted average. Suppose that homework counts 10%, quizzes 20%, and tests 70%.If Pat has a homework grade of 92, a quiz grade of 68, and a test grade of 81, then.rades are often computed using a weighted average. Suppose that homework counts 10%, quizzes 20%, and tests 70%.