Question

chelsea wants to determine the number of people in her school who read news reports on the internet daily. she asks five people in her language arts class. which improvements could chelsea make to her sample to increase the validity of the results? select three options. increase the sample size choose students from different grade levels choose every fourth student in all language arts classes decrease the sample size choose students whose answer to the survey question is predetermined

Explanation:

1. Increasing sample size reduces bias and improves representativeness of the whole school population.
2. Choosing students from different grade levels ensures the sample includes diverse groups across the school, not just one class.
3. Choosing every fourth student in all language arts classes uses systematic sampling to expand the sample and make it more representative than just one small class.

Decreasing sample size or pre-selecting answers would reduce validity by making the sample less representative or introducing bias.

Answer:

• increase the sample size
• choose students from different grade levels
• choose every fourth student in all language arts classes