The Test Statistics for One-Way ANOVA Is $F = \frac { \text { variance between samples } } { \text { variance within samples } }$

Essay

The test statistics for one-way ANOVA is $F = \frac { \text { variance between samples } } { \text { variance within samples } }$
Describe variance within samples and variance between samples. What relationship does variance within samples and variance between samples would result in the conclusion that the value of F is significant?