Chi Square Calculator

Step-by-Step Guide to Using the Chi-Square Calculator

Step 1: Input Observed Value

Begin by entering the observed value in the provided field. Ensure that this value is a number equal to or greater than zero, as it is a mandatory requirement for the calculation.

Step 2: Input Expected Value

Next, fill in the expected value. Like the observed value, this should also be a number that is zero or more. The expected value, along with the observed value, will be used to calculate the Chi-Square statistic.

Step 3: Input Degrees of Freedom

Enter the degrees of freedom for your dataset. This is a required field and must be a whole number with a minimum value of one. The degrees of freedom influence the distribution, which is crucial for the p-value calculation.

Step 4: Select Significance Level

Select the significance level from the drop-down menu. You have three options: 0.10 (90% confidence), 0.05 (95% confidence), and 0.01 (99% confidence). This choice affects the p-value threshold for determining statistical significance.

Step 5: Reviewing Calculated Results

• Chi-Square Value: Once you’ve entered all inputs, the calculator will compute the Chi-Square value using the formula: (Observed Value – Expected Value)² / Expected Value. This value will be displayed up to four decimal places.
• P-Value: The p-value is calculated by evaluating 1 minus the cumulative distribution function of the Chi-Square value with specified degrees of freedom. This will also be shown with four decimal places.
• Statistical Significance: Finally, the calculator will indicate whether the results are statistically significant by comparing the p-value with the selected significance level. If the p-value is less than the significance level, the result is deemed “Significant,” otherwise “Not Significant.”

Utilize this guide to input your data correctly and interpret the results provided by the Chi-Square Calculator effectively.