Descriptive statistics

• Descriptive statistics


  Statistics that summarize and describe certain features of a quantitative data set
• Measures of central tendency

  • Mean
  • Median
  • Mode
• Mean


  The average score, calculated by adding all the scores and dividing by the number of scores
• Median


  The middle score when the scores are ordered from lowest to highest
• Mode


  The most frequent score in the data set
• Measures of dispersion


  • Range
  • Standard deviation
• Range


  The difference between the highest and lowest scores
• Standard deviation


  A measure of how spread out the scores are around the mean
• Percentages are another way of describing data
• Calculating percentages


  1. Convert fraction to decimal

  2. Move decimal place two places to the right
• Correlations are also descriptive statistics
• There are 8 tutorial videos covering A-level research methods from 2017-2020
• Patrons at the neuron level and above can access the tutorial videos and printable resources