pecon.stats.var

pecon.stats.var(x, ddof=1)

Compute the variance of a dataset.

Variance measures the average squared deviation of observations from their mean, indicating the dispersion of the data.

Parameters:

• x (array-like) – One-dimensional sequence of numerical values.

• ddof (int, optional) – Delta degrees of freedom. The divisor used is (N - ddof). Use ddof=0 for population variance and ddof=1 for sample variance.

Returns:

The variance of the data.

Return type:

float

Notes

The value of ddof must satisfy 0 <= ddof < N, where N is the number of observations. Otherwise, a ValueError is raised.

Examples

>>> from pecon import stats
>>> x = [2, 4, 6, 8]
>>> var = stats.var(x, ddof=1)
>>> print(f"Var = {var}")
Var = 6.666666666666667