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1. Which of the following statements best describes the situation below? A high school senior would like to know about his classmates plans after graduation. He randomly selects two hundred students from the senior class to take a survey O This appears to be a random sample, so the results will likely be invalid This appears to be a random sample, so the results will likely be valid This appears to be a self-selected sample, so the results will likely be invalid. This appears to be a self-selected sample, so the results will likely be valid

1. Which of the following statements best describes the situation below? A high school senior would like to know about his classmates plans after graduation. He randomly selects two hundred students from the senior class to take a survey O This appears to be a random sample, so the results will likely be invalid This appears to be a random sample, so the results will likely be valid This appears to be a self-selected sample, so the results will likely be invalid. This appears to be a self-selected sample, so the results will likely be valid

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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### Survey Sampling in Educational Research #### Question: Which of the following statements best describes the situation below? A high school senior would like to know about his classmates' plans after graduation. He randomly selects two hundred students from the senior class to take a survey. - **Option A:** This appears to be a random sample, so the results will likely be invalid. - **Option B:** This appears to be a random sample, so the results will likely be valid. - **Option C:** This appears to be a self-selected sample, so the results will likely be invalid. - **Option D:** This appears to be a self-selected sample, so the results will likely be valid. #### Explanation: In survey research, the method of selecting participants is crucial to the validity of the results. A **random sample** ensures that every individual in the population has an equal chance of being selected, which helps in making the results more representative of the whole population and reducing bias. Conversely, a **self-selected sample** arises when individuals volunteer to participate, introducing potential bias as these individuals might not represent the entire population accurately. #### Analysis: - Since the senior randomly selects students, the sampling method described in the question is **random sampling**. - Random sampling typically enhances the **validity** of the results because it lessens biases and ensures a more representative sample of the population. Thus, the correct choice is: - **Option B:** This appears to be a random sample, so the results will likely be valid.
Transcribed Image Text:### Survey Sampling in Educational Research #### Question: Which of the following statements best describes the situation below? A high school senior would like to know about his classmates' plans after graduation. He randomly selects two hundred students from the senior class to take a survey. - **Option A:** This appears to be a random sample, so the results will likely be invalid. - **Option B:** This appears to be a random sample, so the results will likely be valid. - **Option C:** This appears to be a self-selected sample, so the results will likely be invalid. - **Option D:** This appears to be a self-selected sample, so the results will likely be valid. #### Explanation: In survey research, the method of selecting participants is crucial to the validity of the results. A **random sample** ensures that every individual in the population has an equal chance of being selected, which helps in making the results more representative of the whole population and reducing bias. Conversely, a **self-selected sample** arises when individuals volunteer to participate, introducing potential bias as these individuals might not represent the entire population accurately. #### Analysis: - Since the senior randomly selects students, the sampling method described in the question is **random sampling**. - Random sampling typically enhances the **validity** of the results because it lessens biases and ensures a more representative sample of the population. Thus, the correct choice is: - **Option B:** This appears to be a random sample, so the results will likely be valid.
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