Quiz On Data Collection

Explanation
The correct answer is Survey and Observation. These two methods, survey and observation, are commonly used for data collection. A survey involves asking individuals questions to gather information, while observation involves directly observing and recording behavior or events. Both methods are effective in collecting data and are widely used in research and data analysis. Watching TV and searching on Google are not data collection methods as they do not involve gathering specific information or data.

Explanation
To prevent self-selection during a study means to avoid bias by allowing participants to choose their own groups or conditions. This can lead to skewed results as individuals may have personal preferences or characteristics that influence their choice. By preventing self-selection, researchers can ensure a more representative and unbiased sample, increasing the validity and reliability of their findings. Therefore, the statement "True" is correct as it accurately states that one should prevent themselves from self-selection during a study.

Explanation
The two types of interviews are telephone interviews and group interviews. These types of interviews involve different formats and settings for assessing candidates. Telephone interviews are conducted over the phone, allowing for remote communication between the interviewer and the interviewee. Group interviews, on the other hand, involve multiple candidates being interviewed simultaneously, often in a face-to-face setting. The answer options provided in the question all accurately represent the two types of interviews.

Explanation
The people who reply to your study fall into the group known as the sample frame. A sample frame is a list or source of potential participants or respondents from which a sample is drawn. In other words, it is the population from which the sample is selected. So, the individuals who respond to your study are part of the sample frame, which represents the larger population you are studying.