A scientist wants to make their experiment more accurate. Which of the following should they do to ensure this.
decrease their sample size
nothing; there is no way to increase the accuracy of an experiment
increase their control amount
increase their sample size
Whoever worded this question needs to proofread his/her grammar.
Yes, the grammar is wrong. But to the question, what do you think, Alex?
Grammar aside, the answer is D. However, I think the question confuses accuracy with precision. The D answer is for increasing precision; it may or may not improve accuracy. None of the other answers will improve accuracy either.
To ensure accuracy in an experiment, a scientist should increase their sample size. This is because having a larger sample size allows for a more representative and reliable data set. With a larger sample size, random variations and errors are more likely to be averaged out, reducing the impact of outliers and increasing the overall accuracy of the experiment's results.
Decreasing the sample size would have the opposite effect. A smaller sample size can lead to higher variability in the data, making it less accurate and less reliable.
Increasing the control amount, while important for experimental design, does not necessarily improve the accuracy of the experiment. Controls are used to eliminate the influence of extraneous variables, but they do not directly address the issue of accuracy.
So, the best choice to ensure accuracy in an experiment is to increase the sample size.