Average, Mean, Mode
Average = Mean = Central Tendency Median = Middle number Mode = most common number
Interquartile range is the amount of spread in the middle 50% of a dataset Interquartile (IQR) range = - Find the median - Find the median of the left half - Find the median of the right half - Subtract the smaller median from the larger medium - That ^^ is the Interquartile range
Dispersion is the amount of spread in a dataset.
-10, 0, 10, 20, 30 8, 9, 10, 11, 12
- The dataset on the left is more disperse than the one on the right
- They have the same average (10) but get there in very different ways
Range - Given a dataset, the range is simply - order the numbers in the dataset ascending - subtract the largest number from the smallest number - Range can often tell you the difference in dispersion
Graph:
- 113.022 Statistics - Average, Mean, Mode, Dispersion, Range to 113.023 Statistics - Variance, Standard Deviation
- 113.023 Statistics - Variance, Standard Deviation to 113.022 Statistics - Average, Mean, Mode, Dispersion, Range
- 113.024 Statistics - Judging outliers in a dataset to 113.022 Statistics - Average, Mean, Mode, Dispersion, Range