Question

A class of biology students conducted an experiment on ants. Each group was randomly assigned 20 ants. Each ant was placed halfway between food located down a dark-colored path and food located down a bright-colored path.

Five of the groups find that the ants choose the bright path more often. Three groups find that the ants prefer the dark path and two groups find no preference among their ants.
A student who hypothesized that ants are attracted to bright colors found that this hypothesis was supported by his group's data.
How is the student’s conclusion an example of bias?

Answer 1

Because the repetition of the experiment yields different results when they are realized by distinct groups of students .

Step-by-step explanation:

The students needs to repeat the experiment and increase the value of n (sample size) in order to obtain statistically significant results and thus confirm the working hypothesis.

Answer 2

The real answer is The student disregarded the data that did not support the hypothesis.

Step-by-step explanation:

While five groups did have data to support the hypothesis, there were five other groups that did not (three that preferred dark and two that had no preference).