Uniform / rectangular

• Uniform distribution - used for continuous data where the event is equally likely to occur across the time frame.
• Conditions for uniform distribution


  Data MUST be something that can be measured and the event occurring is equally likely across the time frame.
• Calculating the probability density


  • the area of the whole rectangle = 1
  • height of rectangle = 1 / width (use this to find width)
• Calculating exact probabilities


  N/A as always = 0
• Calculating cumulative probabilities


  Use the areas to represent probabilities.
• Exam technique for the rectangular distribution


  • draw the diagram
  • mean = median as data is symmetric
  • given rule is often used alongside this distribution