Quiz in Statistics (E)

The most important continuous probability distribution in statistics is the ______ which can be used to model many sets of measurements in nature, industry, and business.

The graph of a normal distribution is the ______.

The _____ is bell-shaped and is symmetric about the mean.

In a ______, the mean, median, and mode are equal.

The total area under the normal curve is equal to ___.

The ______ approaches, but never touches, the x-axis as it extends farther and farther away from the mean.

The points at which the curve changes from curving upward to curving downward are called _______.

State the two requirements for a probability density functioin.

The mean gives the location of the line of symmetry, and the standard deviation describes how much the data are spread out.

• True

• False

Because every normal distribution can be transformed to the standard normal distribution, you can use z-scores and the standard normal curve to find area, and therefore _____, under the normal curve.