Datasets for Statistical Analysis: Science and Engineering

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Science and Engineering

• Demand for public transit services in rural areas
  Two small data sets for regression, with a number of potential predictors
• Properties of bamboo flooring
  Moisture content, stiffness, bending strength and hardness of five samples of bamboo flooring
• Hardness of bamboo flooring
  A small experiment (5 samples; two reps) to measure the hardness of bamboo flooring
• Mutagenicity assay
  A Poisson glm with a non-standard predictor and repeated measurements
• Treatment of kidney stones
  An example of Simpson's paradox: success rates of two treatment methods classified by size of the stones
• Microwaving ice cubes
  The time taken for ice cubes to melt at various settings of a microwave oven
• Bouncing squash balls
  Squash balls are bounced at room temperature and after being submerged in boiling water
• Desorbtion of carbon monoxide
  A designed experiment with 22 observations; the variance could be non-constant
• Elastomer viscosity
  A designed experiment measuring the viscosity of elastomers as a function of oil and filler
• Annual grain yield
  The annual grain yield on Broadbalk field at Rothamsted from 1852 to 1925 (plot 2B)
• Chemical yields
  Yields from consecutive runs of a chemical batch process
• Stress fractures in brittle material
  Fracture stress at five different levels of stress rates; requires a log transform of both variables.
• Cigarette data
  A small data set (25 observations on five variables) with an outlier, and two variables collinear
• Counting alpha-particles
• Flying bomb hits on London during World War II
• Nambeware products
  The time taken to polish and grind numerous products made by Nambe Mills.
• The cost of finished steel
• Equipment failures
  An example of a Poisson glm with an identity link function.
• Tractor guidance systems
  Offsets from two tractor guidance systems taken over time.
• Intervals between vehicles
  The data might be expected to follow an exponential distribution, but do not.
• Software system failures
  The data appear well modelled by an exponential distribution
• Pilot deaths
  The data show a significant trend in deaths with increasing age.
• Uniform random numbers
  The data give 1000 random numbers from five different packages.
• Measurements from an electronic compass
  Observations from an electronic compass; ideally, the data follow a sine curve.
• Fissures in turbine wheels
  The number (proportion) of turbines failing after a number of hours of use.
• Hooker's boiling point data
  The boiling point of water and air temperature in the Himalaya Mountains.
• Toxoplasmosis and rainfall
  The proportion of people sampled in 34 cities in El Salvador who tested positive for toxoplasmosis. A polynomial relationship.
• Cell mutant frequencies in children
  The somatic cell mutant frequencies at the hrpt locus of the X-chormosome in healthy children
• Dialectric breakdown strength
  Performance degradation data from accelerated tests; can be modelled with a log-normal or gamma distribution, or with a Tweedie distribution with p about 1.8
• Oxidation rate of benzene
  Modelled well with a gamma glm using a reciprocal of oxygen concetration and a log-link