## Statistics

HERE you will find the link to the Georgia Department of Education regarding

__STATISTICS__.## Parent Reminder

Probability

Khan Academy - click HERE

Khan Academy - click HERE

Statistics

Khan Academy - click HERE

Khan Academy - click HERE

## VOCABULARY

__Box and Whisker Plot__A diagram that summarizes data using the median, the upper and lowers quartiles, and the extreme values (minimum and 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), Maximum.

__Frequency__the number of times an item, number, or event occurs in a set of data

*The organization of raw data in table form with classes and frequencies*

__Grouped Frequency Table__

__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)__The difference between the first and third quartiles. (Note that the first quartile and third quartiles are sometimes called upper and lower quartiles.)

__Maximum value__The largest value in a set of data.

__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 form the mean value.

__Mean__The "average" or "fair share" value for the data. The mean is also the balance point of the corresponding data distribution.

__Measures of Center__The mean and the median are both ways to measure the center for a set of data.

__Measures of Spread__The range and the Mean Absolute Deviation are both common ways to measure the spread for a set of data.

__Median__The value for which half the numbers are larger and half are smaller. If there are two middle numbers, the median is the arithmetic mean of the two middle numbers. Note: The median is a good choice to represent the center of a distribution when the distribution is skewed or outliers are present.

__Minimum value__The smallest value in a set of data.

*The number that occurs the most often in a list. There can be more than one mode, or no mode.*

__Mode__

__Outlier__A value that is very far away from most of the values in a data set.

__Range__A measure of spread for a set of data. To find the range, subtract the smallest value from the largest value in a set of data.

*A graphical method used to represent ordered numerical data. Once the data are ordered, the stem and leaves are determined. Typically the stem is all but the last digit of each data point and the leaf is that last digit.*

__Stem and Leaf Plot__