7 (2.5 points) What is a representative sample in survey research? Question 7 options: A random selection of any available individuals A group of respondents chosen based on convenience The entire population being studied A small group of respondents selected from a larger population Question 8 (2.5 points) What is a key challenge in survey research? Question 8 options: Avoiding any form of data analysis Ensuring all respondents answer truthfully Accurately counting populations like the homeless Designing surveys that require no interpretation Question 9 (2.5 points) What is the purpose of an experimental group in an experiment? Question 9 options: To provide a baseline for comparison without any manipulation To remain unexposed to any variables To be exposed to the independent variable and measure its effect To analyze existing data from previous studies