Question

a scientist designed and conducted an experiment to test a hypothesis, and then formed a conclusion from her results. next, she collected and analyzed more data and formed another conclusion. which statement best justifies the fact that she skipped the hypothesis and experimental design steps of the scientific method? the scientist must have realized that she performed one of the steps incorrectly. the scientist was unhappy with the first data set and started the experiment over. the scientist was repeating the experiment to improve the validity of her data. the scientist was planning to form a hypothesis after completing the experiment.

Explanation:

In the scientific method, repeating an experiment (by collecting and analyzing more data without re - doing hypothesis and experimental design from scratch) is often done to improve data validity. Option A assumes an error without evidence. Option B implies starting over completely which is not the case as she just added more data. Option D is against the normal order of the scientific method (hypothesis before experiment). So, the most reasonable is that she was repeating to enhance data validity.

Answer:

C. The scientist was repeating the experiment to improve the validity of her data.