Question

Tina wants to know if she will win the election for class president. She asks her ten closest friends who they will vote for.

(each sample used in a survey below is biased. Explain how to modify the sample to eliminate the bias.)

Answer 1

Hi! To the person above me. The question states that Tina asked 10 of her closest friends which is biased. You wrote “She is asking her close friends, which is a biased sample.” The question is asking to find a way to make Tina’s sample unbiased. My answer is she should ask every 3rd person she finds at lunch.

The reason I say this is because a biased sample is where you pick or select certain people over others. Here is an example: Tina asked 5 of her friend what their favorite school lunches were. That is biased.

An unbiased sample is where you choose at random. Here is an example: Tina asked every 10th person at the lunch table. That is unbiased.

My is up there and here also: She should ask every 3rd person she finds at lunch.
Hope this helps :)

Answer 2

she is asking her close friends, which is a biased sample

Explanation: