Box-and-whisker plot - A diagram that summarizes data using the median, the upper and lower quartiles, and the extreme values (minimum & maximum). Box and whisker plots are also known as box plots. It is constructed from the five-number summary of the data: Minimum, Q1 (lower quartile), Q2 (median), Q3 (upper quartile), and maximum.

Frequency - The number of times an item, number, or event occurs in a set of data.

Grouped frequency table - The organization of raw data in table form with classes and frequencies.

Histogram - A way of displaying numeric data using horizontal or vertical bars so that the height or length of the bars indicates frequency.

Inter-Quartile Range (IQR) - It is a measure of variation in a set of numerical data, the interquartile range is the distance between the first and third quartiles of the data set.

Maximum value - The largest value in a data set.

Mean Absolute Deviation - The average distance of each data value from the mean. The MAD is a gauge of "on average" how different the data values are from the mean value.

MAD =

number of data values

Mean - A measure of center in a set of numerical data, computed by adding the values in a list and then dividing by the number of values in the list (the average).

Measures of Center - The mean and median are both ways to measure the center for a set of data.

Median - The middle of a set of data arranged in order from least to greatest. The median is a good choice to use when there is an outlier.

Minimum value - The smallest value in a data set.

Mode - The number that occurs the most.

Outlier - A value that is very far from most of the data in a data set. (Past 1.5 time the MAD.

Range - A measure of spread calculated by subtracting the smallest number from the largest number.

Sample - A part of the population that we actually examine in order to gather information.

Frequency - The number of times an item, number, or event occurs in a set of data.

Grouped frequency table - The organization of raw data in table form with classes and frequencies.

Histogram - A way of displaying numeric data using horizontal or vertical bars so that the height or length of the bars indicates frequency.

Inter-Quartile Range (IQR) - It is a measure of variation in a set of numerical data, the interquartile range is the distance between the first and third quartiles of the data set.

Maximum value - The largest value in a data set.

Mean Absolute Deviation - The average distance of each data value from the mean. The MAD is a gauge of "on average" how different the data values are from the mean value.

MAD =

__total distance from the mean for all values__number of data values

Mean - A measure of center in a set of numerical data, computed by adding the values in a list and then dividing by the number of values in the list (the average).

Measures of Center - The mean and median are both ways to measure the center for a set of data.

Median - The middle of a set of data arranged in order from least to greatest. The median is a good choice to use when there is an outlier.

Minimum value - The smallest value in a data set.

Mode - The number that occurs the most.

Outlier - A value that is very far from most of the data in a data set. (Past 1.5 time the MAD.

Range - A measure of spread calculated by subtracting the smallest number from the largest number.

Sample - A part of the population that we actually examine in order to gather information.