Statistics Collecting Data Unit

A distribution with a vertical line of symmetry in the center of the graphical representation, so that the mean is equal to the median.

A distribution which has the data values evenly distributed throughout the range of the data.

A quantity that is calculated from sample data, such as the mean, median, or MAD (mean absolute deviation).

• statistic

• measure of variation

• standard deviation

• hand sanitizer

A measure of the variability, or spread, of a distribution calculated by a method similar to the method for calculating the MAD (mean absolute deviation).

• standard deviation

• MAD

• mean

• mode

The most common value in a set of data. Can be more than one number.

A measure of variability based on dividing a data set into quartiles. Calculated by subtracting the first quartile from the third quartile.

The average distance between each data value and the mean. This is used to describe variation in a data set. It also helps us get a sense of how "spread out" the values in a data set are.

A data value that is unusual in that it differs quite a bit from the other values in the data set. .

• outlier

• statistic

• mean

• symmetric

A value that attempts to describe a set of data by identifying a central position of the data set (as representative of a "typical" value in the set). Ex: mean, median, mode.

• measure of center

• measure of variability

• statistic

• spread

The average of a set of numbers. Calculated by adding up all of the terms and dividing by the number of terms.