quartiles
Data divided fourfold
Quartiles are the three values that divide a dataset into four equal parts when the data is arranged in order.
The first quartile marks where 25% of the data falls below, the second quartile is the median (50%), and the third quartile marks the 75% point.
Quartiles are fundamental to statistical analysis and appear in box plots: The test scores ranged from the 25th to 75th quartile.
Statistics assuming no distribution
- datasetOrganized collection of information
- histogramFrequency distribution graph
- robust statisticsAnalysis unaffected by outliers
- data analysisSystematic information interpretation
Middle fifty percent span
- whiskersFacial sensory hairs
- outliersExtreme data points
- fencesBoundary structures around yards
- median lineCentral dividing axis
Seventeenth letter
- Q3Year's third segment
- medianCentral sorted value
- interquartileBetween 25th and 75th percentiles
To distribute widely
- dispersionScattering across space
- variabilityTendency to change
- skewnessDistribution asymmetry measure
- scatterDistribute in random directions
Hundredth-fraction rank markers
- quintilesFive equal statistical divisions
- decilesTenth-percentile markers
- centilesHundredth-division ranking points
- percentile rankPosition relative to others
frequency distribution · probability distribution · normal distribution
nonparametric
Statistics assuming no distribution
- datasetOrganized collection of information
- histogramFrequency distribution graph
- robust statisticsAnalysis unaffected by outliers
data analysis · SPSS · Excel
interquartile range
Middle fifty percent span
Q1
Seventeenth letter
- Q3Year's third segment
- medianCentral sorted value
- interquartileBetween 25th and 75th percentiles
spread
To distribute widely
- dispersionScattering across space
- variabilityTendency to change
- skewnessDistribution asymmetry measure
scatter · asymmetry · heterogeneity · homogeneity · central tendency
percentiles
Hundredth-fraction rank markers
- quintilesFive equal statistical divisions
- decilesTenth-percentile markers
- centilesHundredth-division ranking points
percentile rank · frequency distribution · probability distribution · normal distribution
- statisticsmean, median, mode, variance, standard deviation
- data analysisstatistics, analysis, analytics, conclusions, mean
- grading termsmint, near mint, excellent, very good, good
- journalsjournals, journal, diary, diaries, personal diaries
- business metricsconversion rate, revenue, KPIs, sales figures, ROI
- sorting methodsalphabetical, chronological, sequential, numerical, ranking