DiscoverQuiz1 (Design of Experiments)_ DATA1001 Foundations of Data Science

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07/03/2023, 15:06 DiscoverQuiz1 (Design of Experiments): DATA1001 Foundations of Data Science https://canvas.sydney.edu.au/courses/48435/quizzes/215422 1/7 DiscoverQuiz1 (Design of Experiments) Due No due date Points 12 Questions 12 Time Limit None Allowed Attempts Unlimited Attempt History Attempt Time Score KEPT Attempt 3 1 minute 12 out of 12 LATEST Attempt 3 1 minute 12 out of 12 Attempt 2 2 minutes 11 out of 12 Attempt 1 6 minutes 10 out of 12 Submitted Feb 20 at 19:43 Take the Quiz Again 1 / 1 pts Question 1 Is this statement true or false? "In a double blind experiment, all the subjects cannot see the investigators." True False Correct! Correct! Good work!

07/03/2023, 15:06 DiscoverQuiz1 (Design of Experiments): DATA1001 Foundations of Data Science https://canvas.sydney.edu.au/courses/48435/quizzes/215422 2/7 1 / 1 pts Question 2 In data science, what is "reproducible research"? Research that has already been conducted by someone else. A data report that can be checked by a 3rd party. Correct! Correct! Good work! That's why we are learning R Markdown! An experiment that is repeated. 1 / 1 pts Question 3 "Simpson's Paradox occurs when relationships between percentages in subgroups are the same, when the subgroups are combined, because of a confounding or lurking variable". True False Correct! Correct! Good work. 'the percentages are different' ... in Simpson's Paradox. 1 / 1 pts Question 4 Is this statement true or false? " A confounding variable is one that has a hidden effect on the dependent variable."

07/03/2023, 15:06 DiscoverQuiz1 (Design of Experiments): DATA1001 Foundations of Data Science https://canvas.sydney.edu.au/courses/48435/quizzes/215422 3/7 True Correct! Correct! Good work! Though it is easier to define confounding variables than to find them! False 1 / 1 pts Question 5 According to Prof. Tara Murphy, "data is the way we see the <?>" sky black holes world universe Correct! Correct! Good work! 1 / 1 pts Question 6 What is the human genome project? See: https://www.genome.gov/human-genome-project An international philanthropic project to help agriculture in developing countries.

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07/03/2023, 15:06 DiscoverQuiz1 (Design of Experiments): DATA1001 Foundations of Data Science https://canvas.sydney.edu.au/courses/48435/quizzes/215422 4/7 An Australian school-based project studying maths education in lower income areas. An international collaborative project to map and understand human genes. Correct! Correct! Good work! Australian research on mental health, focusing on adult despression. 1 / 1 pts Question 7 Why do we conduct a "controlled experiment"? To focus on the effect of the treatment. Correct! Correct! Good work! To focus on the effect of the placebo. 1 / 1 pts Question 8 Is this statement true or false? "A contemporaneous control group occurs at the same time as the placebo group." Note: This is tricky! Be very careful with your definitions of concepts.

07/03/2023, 15:06 DiscoverQuiz1 (Design of Experiments): DATA1001 Foundations of Data Science https://canvas.sydney.edu.au/courses/48435/quizzes/215422 5/7 True False Correct! Correct! Good work! A contemporaneous control group occurs at the same time as the treatment group . 1 / 1 pts Question 9 Is this statement true or false? "The placebo effect is a pretend treatment. It is designed to be neutral and indistinguishable from the treatment." True False Correct! Correct! Well done! This requires precision - ie we are talking about the 'placebo effect' not the 'placebo. Placebo effect =what results from someone thinking they have had the placebo Placebo = pretend treatment 1 / 1 pts Question 10 Select the correct statement in the following. A control = a subject who got the treatment.

07/03/2023, 15:06 DiscoverQuiz1 (Design of Experiments): DATA1001 Foundations of Data Science https://canvas.sydney.edu.au/courses/48435/quizzes/215422 6/7 Controlling for confounders = trying to reduce the inﬂuence of confounding variables. Correct! Correct! Good work! A controlled experiment = a study where the investigators make all the decisions. 1 / 1 pts Question 11 What was the mistake in the portacaval shunt (1966) experiment? The patients were allocated by income. The patients were allocated randomly. The patients were allocated by health. Correct! Correct! Good work! It was a sensible medical decision ie it is dangerous for someone with morbidities to have a big operation. However, it did result in the experiment not being a RCT. 1 / 1 pts Question 12 What questions are involved when studying ethics in data science? All the other answers. Correct! Correct! Good work.

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07/03/2023, 15:06 DiscoverQuiz1 (Design of Experiments): DATA1001 Foundations of Data Science https://canvas.sydney.edu.au/courses/48435/quizzes/215422 7/7 Where did the data come from? Who does the data belong to? Does the data involve human subjects?