Help please I really don't understand this!
1)Janine wishes to conduct a poll to predict how many students will vote for her for class president.
Which polling methods are likely to be biased?
Choose all answers that are correct.
A.
Five people in each of Janine’s classes are selected and asked for whom they intend to vote.
B.
From a list of all students in Janine’s grade, 25 students are selected at random and asked for whom they intend to vote.
C.
Every 10th student from a list of all students in Janine’s grade is selected and asked for whom the student intends to vote.
D.
Janine chooses 5 of her friends and asks each to select another 5 students. These 25 students are asked for whom they intend to vote.
I think it's A and D
Yes, both A and D are biased.
Ok Thank you
You're welcome.
To determine which polling methods might be biased, we need to understand what bias means in the context of polling. Bias refers to any systematic error in the collection, analysis, interpretation, or reporting of data that leads to a distortion of the true values or characteristics of the population being measured.
Now, let's analyze each polling method:
A. Five people in each of Janine’s classes are selected and asked for whom they intend to vote.
This method could be biased because it only includes students from specific classes, potentially excluding other students who may have different voting preferences.
B. From a list of all students in Janine’s grade, 25 students are selected at random and asked for whom they intend to vote.
This method is less likely to be biased because it uses random selection from the entire population of students in Janine's grade.
C. Every 10th student from a list of all students in Janine’s grade is selected and asked for whom the student intends to vote.
This method could also be biased as it may introduce a pattern based on the order of students on the list, potentially excluding certain groups of students.
D. Janine chooses 5 of her friends and asks each to select another 5 students. These 25 students are asked for whom they intend to vote.
This method could be biased as it relies on Janine's friends to select additional students, potentially leading to a biased sample if her friends have similar voting preferences.
Based on this analysis, your answer of A and D is correct. These polling methods have the potential to introduce bias in the results.