What is the Expected Frequency Calculator?

The Expected Frequency Calculator is a tool that helps users calculate the expected number of observations for each category based on total observations and probabilities or ratios. By entering the total sample size and the probabilities or ratios for each category, the calculator computes the expected frequency for each, which is useful in statistics for chi-square tests, probability analysis, or data modeling.

How to Use:

1. Enter Total Observations (N): Input the total number of observations or trials.
2. Enter Probabilities or Ratios: Input the probabilities or ratios for each category, separated by commas, e.g., 0.2, 0.3, 0.5 or 2, 3, 5.
3. Click “Calculate”: The calculator processes your input and normalizes the probabilities if needed.
4. Review Result: The output shows the normalized probabilities, expected frequencies for each category, and a table displaying all values for easy interpretation.