High levels of Jitter and Ping

I have reset the signal to the modem and have tried with and without a router attached. Still there is frequent high levels of jitter and ping.
 769 - Ping
1868 - Jitter
77.2 - Download
 3.4 - Upload
Cox  - Orange County

Above are results using the test internet speed on the cox website to cox servers.

What would be the best way to resolve this?