A ___________________ is a table that shows the number of data observations that fall into specific intervals or classes.

The Berlin Aging Study found these two things to be the most important psychosocial predictors of successful aging:

Suppose the annual out-of-pocket health care expenses for retirees have a mean of $10,700 and a standard deviation of $2,500.  Using Chebyshev’s Theorem, the percentage of retirees with annual out-of-pocket health care costs between $5,700 and $15,700 is

Extra Credit: You will have to wait for me to manually award the credit. What is the mineral name for salt?

Which of the following refers to molten rock beneath the Earth’s surface?

A(n) has a positive charge and a(n) has a negative charge.

A mineral that is shiny like a chrome bumper on a car would be considered metallic. This is called the mineral’s _________.

What is the most unreliable or variable quality of a mineral, and therefore is not as useful when trying to identify it.

An igneous rock with a glassy texture (volcanic glass) contains no mineral crystals

A mineral with                     will tend to break along planes of weakness with two opposing, flat, smooth surfaces.