This form allows you to input sets of numeric data in any or all of the windows below and then to examine the value of various descriptive statistics applied to you data set.

For each data set, the following statistics are calculated:

  1. size - how many elements are there in the data set
  2. average - arithmetic mean (= sum/size)
  3. median - midpoint in ordered data
  4. sd - standard deviation
  5. z-value - a z-score is calculate for a value you supply
  6. percentile - the score is calculated for a percentile you supply
  7. confidence intervals - various confidence intervals for estimating the population mean
  8. box 'n whiskers diagrams

Percentiel (0-100):