Index of On-line Stats Calculators

• Descriptive Statistics (mean, standard deviation, 5-number summary, normal test, etc) info
  Display advice (How to Lie with Statistics) info
  Display options (error bars, boxplots, cumulative fraction, histogram, etc.) info
  • Calculate: 1 data-set with between 3 and 1024 points, bulk data entry, Log-ready, cumulative fraction display
  • Calculate: 2 data-sets with between 10 and 1024 points, bulk data entry, cumulative fraction display, KS-test comparison
  • Calculate: 1 to 26 data-sets each with between 10 and 1024 points, bulk data entry, boxplot display

• Calculate: z-Test: are two results (value+normally distributed error) really different?

• Student's t-Test: Unpaired info
  • Calculate: 2 data-sets with between 3 and 1024 points, bulk data entry, boxplot display

• Student's t-Test: Paired info
  • Calculate: 2 data-sets with between 3 and 99 points, pointwise data entry

• Kolmogorov-Smirnov Test info
  • Calculate: 2 data-sets with between 10 and 1024 points, bulk data entry, descriptive stats, cumulative fraction display

• X² Test: Observed and Expected Counts info
  • Calculate: 2 to 99 pairs of observed and expected counts, pointwise data entry

• X² Contingency Tables info
  • Calculate: Contingency tables up to 9×9 , pointwise data entry

• Exact Contingency Tables (Fisher Test) info
  • Calculate: Exact one-sided analysis of 2×2 contingency tables, pointwise data entry
  • Calculate: Exact two-sided analysis of up to 6×6 contingency tables, pointwise data entry

• ANOVA: ANalysis Of VAriance between groups info
  • Calculate: 3 to 26 groups of data with at most 1024 data-points in any one group, bulk data entry, several display options

• Ordinary Least Squares (Regression, R) info
  • Calculate: 3 to 99 data pairs, choice of functions to fit, scatter plot with trendline

• Alternatives to Ordinary Least Squares info
  • Enter data via copy&paste, do all the above fits and display four trendlines

• Curve Fits info and more info
  • Calculate: Fit to a variety of functions with or without x-error/y-error. Bulk dat entry. WAPP

Data Entry Terms Defined

pointwise data entry

An input box for each data point in a data set:

This sort of data entry is generally limited to 99 data points. Blank boxes are ignored.

bulk data entry

One input box for all data points in a data set:

This sort of data entry is generally limited to 1024 data points. Individual data-points are separated by spaces, commas, tabs, or newlines. If you have the data available on a different screen, you should be able to copy and paste it into the bulk data box. The above two data input examples are transmitted as identical data-sets.