you want to determine the average age when people got their driver's licence you want to collect data from a random sample of at least 400 people Which of these is most valid for collecting data?
* Survey an equal number of students of driving age teachers parents and grandparents
What were the other choices?
To determine the average age when people got their driver's license, surveying an equal number of students of driving age, teachers, parents, and grandparents may not be the most valid method for collecting data. Here's why:
1. Selection bias: Surveying an equal number of these different groups might introduce selection bias. For example, if you survey more students of driving age, their responses could dominate the dataset and skew the average age.
2. Lack of representation: The survey may not accurately represent the entire population, as it doesn't cover other relevant groups such as non-parent adults or elderly individuals who never had a driver's license.
3. Sample size: While surveying all four groups may increase the sample size, it doesn't guarantee the necessary minimum of 400 people. It's important to ensure a sufficient sample size for reliable results.
4. Appropriate comparison: Comparing different age groups like students and grandparents may not provide meaningful insights into the average age people got their driver's license.
A more valid approach would be to randomly sample individuals from different age groups within the population and ask them about the age at which they obtained their driver's license. This would provide a more representative sample, reducing biases and increasing the reliability of the findings.