The Chromebook 11 has an 802.11n WiFi standard which is better than most laptops of this spec and age. Most Chromebooks that have been around for around the same time as it have an 802.11b WiFi standard. In addition, this portable PC have 802.11a and 802.11ac and 802.11g WiFi standards.
An 802.11n WiFi standard is in fact the best Wi-Fi standard across all Chromebooks that are a similar age to the Chromebook 11.
The worst Wi-Fi standard across similar types of laptop is 802.11a.