Hi can you help me identify the variables and classify them in terms of level of measurement, and whether they are discrete or continuous . If each variable is independent or dependent?

1. For a research project in a political science course, a student collected information for 50 nations. She used infant mortality rates as a measure of quality of life and the percentage of all adults who are permitted to vote as a measure of democratization. Her hypothesis was that quality of life is higher in more democratic nations. 2. A highway engineer wonders whether increasing the speed limit on a heavily traveled highway will result in more accidents. He plans to collect information on traffic volume, number of accidents, and number of fatalities for the six -month periods before and after the speed limit is changed. 3. Students are planning a program to promote "safe sex\" and awareness of other health concerns on campus. To measure the effectiveness of the program, they plan to survey students about their knowledge of safe sex practices before and after the program 4 . A graduate student asks 500 female students whether they have experienced any sexual harassment on campus. Each student is asked to estimate the frequency of these incidents as either "often, sometimes , rarely, or never." The researcher also gathers data on age and major to see whether there is any connection between these variables and frequency of sexual harassment