Experimental Design Principles Answers

accuracyprecisionreplicationrepetition

Shah did not trust the results of an experiment that she had read about, so she is conducting the experiment herself. She goes through the same set of steps and measures the effect of the amount of sugar on a single organism.Which best describes what Shah is doing?

A scientist collected data in 10 trials comparing tired students’ and awake students’ test scores.TrialTired Average ScoreAwake Average Score 1 34% 67% 2 56% 88% 3 60% 90% 4 58% 86% Which trial was the least precise and is unlikely to be reproducible?

Which best describes a situation in which an archer’s aim was precise but not accurate?

An archery contestant left these results:

Justin designed an experiment to find out how running up bleachers affects his heart rate. First he records his resting heart rate and then runs up the bleachers 10 times. Each time he reaches the top, he records his heartrate then rests 20 minutes. Which is involved in Justin's experiment?

Four scientists collected data on the blood pressure of 30 people.

A scientist is conducting an experiment on the learning ability of chimpanzees. Which of these situations would lead to the least reproducible data?

This chart shows the experimental design of four students who are all observing what kind of bird seed birds tend to eat more often.Student 1Student 2Student 3Student 4- Performed the experiment once- Used the same area, same time of day, and same amount of seeds- Repeated the experiment 5 times- Used the same area, different time of day, and different amount of seeds- Repeated the experiment 2 times- Used the same area, different time of day, and different amount of seeds- Repeated the experiment 5 times- Used the same area, same time of day, and same amount of seedsWhich student is the most likely to have reproducible results?

This data was collected after conducting an experiment about the amount, in liters, of water a specific plant needs per month. An accepted value for the measurement is 6 liters. These are the collected experimental values.Which values in the collected data are precise? Check all that apply.1.1 liters1.2 liters1.5 liters6.0 liters8.1 liters