Fathers who are secondary to a female caregiver were more engaged as thinkers and planners. But men raising a child without a female partner were found to have the same level of emotional response as a mother and the same thinking and planning response as the secondary father.
In statistics and probability theory, triangular distribution is a continuous probability distribution. The probability density function of a triangular distribution is shaped like a simple geometric shape, triangle. The triangular distribution is a good model for skewed distributions. It has a definite lower and upper limit, which is helpful to avoid unwanted extreme values.
In probability theory and statistics, the gamma distribution is a two-parameter family of continuous probability distributions. The common exponential distribution and chi-squared distribution are special cases of the gamma distribution. There are three different parametrizations in common use: 1  With a shape parameter k and a scale parameter Î¸.  With a shape parameter Î± = k and an inverse scale parameter Î² = 1/Î¸, called a rate parameter.