Measures of central tendency - a single value (like mean, median, or mode) that attempts to describe a set of data by identifying the central position within that set of data., Measure of spread - the difference between the maximum value and minimum value also called the "range".  , Variance - measures variability from the average or mean., Standard deviation - the average amount of variability in your dataset., Skewed data  - data that creates an asymmetrical, skewed curve on a graph., Symmetrical data - the two sides of the distribution are a mirror image of each other forming a bell shape, Interquartile range - (IQR) contains the second and third quartiles, or the middle half of your data set., 5 point summary - the most extreme values in the data set (the maximum and minimum values), the lower and upper quartiles, and the median., quartile 1 - (Q1), is the value under which 25% of data points are found when they are arranged in increasing order. (the median of the first half of the dataset), quartile 3 - (Q3), is the value under which 75% of data points are found when arranged in increasing order. (the median of the top half of the data set), Median (quartile 2) - the value in the middle of a data set, meaning that 50% of data points have a value smaller or equal to the median and 50% of data points have a value higher or equal to the median., Mean - the average of a data set., Mode - The number that occurs the most in a dataset,

Math Essentials VI - Statistical variability

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