This site offers guidelines to help you analyze the audience to which you will be speaking.
Time constraints are a great consideration.
Listeners may be fatigued and need some lively or startling examples to awaken them. People need more light to focus on the new week. Be more direct and to the point to keep listeners' minds from drifting to the weekend ahead. This data tells you about group characteristics, not individuals. Some researchers contend that groups or audiences can be further subdivided into subgroups by combining personality characteristics with demographics.