Uploaded June 2014 | Updated September 2026, 3 hours ago
I work through an example of a confidence interval and a hypothesis test for the ratio of population variances, using F procedures that are based on the assumption of normally distributed populations.
The example in this video involves tail lengths of male and female lizards. The summary statistics and distributions of the tail lengths are from Table 1 and Figure 2 in:
Qu et al. (2011). Sexual dimorphism and female reproduction in two
sympatric toad-headed lizards, Phrynocephalus frontalis
and P. versicolor (Agamidae). Animal Biology. 61:139-151.
I work through an example of a confidence interval and a hypothesis test for the ratio of population variances, using F procedures that are based on the assumption of normally distributed populations.
The example in this video involves tail lengths of male and female lizards. The summary statistics and distributions of the tail lengths are from Table 1 and Figure 2 in:
Qu et al. (2011). Sexual dimorphism and female reproduction in two
sympatric toad-headed lizards, Phrynocephalus frontalis
and P. versicolor (Agamidae). Animal Biology. 61:139-151.
