Cathy conducted a survey on the relationship between substance abuse and average annual income of an individual. She divided the annual incomes into three ranges, labelled them as low income, middle income, and high income, and found the groups to be present in the target population in the ratio of 4:5:1 . Cathy needed a sample of 100 participants. She selected 40, 50, and 10 people from each income group in a manner such that each individual in a subgroup had equal chance of getting selected into the respective subsample. Which of the following sampling techniques has Cathy used in this scenario?
a. Stratified random sampling
b. Convenience sampling
c. Cluster sampling
d. Quota sampling
Question 2
Which of the following statements is TRUE, when viewing the family as a system?
a. One single person in the family orchestrates the interactional patterns
b. All behavior makes sense in context
c. One single person can be blamed for family distress
d. Personal characteristic are independent of the system
Mars's average distance from the Sun is roughly 230 million km (1.5 AU) and its orbital period
Mark Twain supplemented his income as a writer by giving humorous lectures.
The Head Start program was designed to increase the school readiness of low-income children.
Average Hourly Earnings of U.S. Workers in Current and Constant Dollars
Relationship between the pancreas and the digestive system.
Construct a Lorenz curve that shows income distribution in this society.