I ran a Univariate Analysis variance on pre-test for three different age groups. The analysis showed a Between- Subjects test. The F was .439 and the .648 >p. 05

I want to know what is the Between the subject test?

F and how that relates to the p value.

One the same data a Descriptive Statistics showed the following:

group (1) (M 15.09),

group (2) (M= 16.16), and

group (3) (M= 14.6).

The total of the age groups (M= 15.58).

The Descriptive Statistics with the dependent variable PostTPSS survey, group

(1) M=14.18,

2) M=15.611,

(3) M= 13.80. The total for the age groups M=14.88.

Does the descriptive statistics provide the means but does not provide any information to p values?