Question

which scenarios describe data collected in a biased way? select all that apply. a principal interviewed the 25 students who scored highest on a reading test. without looking, trey picked 10 numbers from a bag containing 100 raffle tickets. kiara put the names of all the students in her school into a hat. then she drew 5 names. for a report on the exercise habits of adults, sergio talked to 30 adults at a local fitness center. josh asked the first 25 people he met at the dog park if they preferred dogs or cats.

Explanation:

1. Interviewing only high - scoring reading test students is biased as it doesn't represent all students.
2. Trey's random pick from raffle tickets is an unbiased sampling method.
3. Kiara's random draw of names from all students is an unbiased sampling method.
4. Talking to adults only at a fitness center for exercise habits report is biased as these adults are more likely to exercise.
5. Asking people at a dog park about dog or cat preference is biased as they are already at a dog - related place.

Answer:

A. A principal interviewed the 25 students who scored highest on a reading test.
D. For a report on the exercise habits of adults, Sergio talked to 30 adults at a local fitness center.
E. Josh asked the first 25 people he met at the dog park if they preferred dogs or cats.