Input:
Enter the value corresponding to the probability in the value box (the first two rows).
Here you can choose to enter a single sample (a set of data) or a double sample (two sets of data)
eg: 2.3 0.8 12/5 3
Enter the probability value in the probability value box. The total probability value is 1, and the data length is the same as the sample length.
eg: 0.4 2/5 0.1 0.1
The K value is used to calculate the k-th order moment, which can be input if necessary
After inputting, click the "Confirm" button to calculate.
Output:
When a single sample is input, the expectation, variance, kurtosis coefficient, etc. are displayed at the bottom. If the k value is entered, the k-th origin moment and the k-th central moment are also displayed at the bottom.
Only when a double sample is input, the covariance and correlation coefficient of the sample will be output.
Note:
1.The "Whether to use equal probability" button has a higher priority than the probability data input box.
2.The decimal fraction can be recognized when entering, but the calculation process and display are all in decimal mode.
k-th central moment | ![]() |
Covariance | ![]() |
Correlation coefficient | ![]() |