Quiz__Lab_11

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University of British Columbia *

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Jan 9, 2024

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6/18/2021 Quiz: Lab 11 https://canvas.ubc.ca/courses/72446/quizzes/338142/take 1/5 Lab 11 Started: Jun 18 at 8:27pm Quiz Instructions 1 pts Question 1 Upload Please upload your script for Lab 11. Please include a comment at the top of the file with your name. A random selection of scripts will be graded by your TA. They will download the file and copy it into the ABDLabs folder on their computer. They will then select all and press Run. Your script should run without errors and produce the answers you entered for the rest of the questions on Canvas this week. Choose a File 1 pts Question 2 Question 1b Do the data require any transformation before analysis using linear regression? No 1 pts Question 3 Question 1c, Part 1 What is the slope of the equation that predicts the offspring telomere length from its father's? Please report your answer to two decimal point (e.g., 150.43, 0.31)

6/18/2021 Quiz: Lab 11 https://canvas.ubc.ca/courses/72446/quizzes/338142/take 2/5 0.98 1 pts Question 4 p 40 words Question 1c, Part 2 Is there evidence that the father’s telomere length predicts his offspring’s value? Name the statistical test you used and give a full statement of hte conclusion form that test. Linear Regression analysis -The p-value of 7.287e-05 is less than 0.05 so we can reject the null hypothesis that father's telomere length does not predict offspring telomere length -This data suggests that father telomere length predicts offspring telomere length </> 1 pts Question 5 Question 2a Edit View Insert Format Tools Table 12pt Paragraph

6/18/2021 Quiz: Lab 11 https://canvas.ubc.ca/courses/72446/quizzes/338142/take 3/5 true_value vs. log(fourth_graders_guess) log(true_value) vs. fourth_graders_guess log(true_value) vs. log(fourth_graders_guess) No transformation is required What transformation of X and Y converts the relationship of the true value vs the fourth graders’ guesses to an approximately linear one? 1 pts Question 6 body size vs. log(brain size) log(body size) vs. brain size log(body size) vs. log(brain size) No transformation is required. Question 3b What transformation of X and Y converts the relationship of brain vs. body size to an approximately linear one? 1 pts Question 7 Question 3c Is there statistical evidence that brain size is correlated with body size? Assume that the species data are independent. Give a full statement of the conclusion of your test. Edit View Insert Format Tools Table 12pt Paragraph

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6/18/2021 Quiz: Lab 11 https://canvas.ubc.ca/courses/72446/quizzes/338142/take 4/5 p 42 words -The P value of 2.2e-16 is less than 0.05 so we can reject the null hypothesis that there is no correlaঞon between brain size and body size. -Instead this is evidence that there is a correlaঞon between brain and body size </> 1 pts Question 8 0.75 Question 3d What is the slope of the line that best predicts (transformed) brain size from (transformed) body size? Please report your answer to two decimal points (e.g., 150.43, 0.31) 1 pts Question 9 2.26 Question 3e Based on your answer in (3d), what is the predicted change in log-brain size accompanying an increase of 3 units of log-body size? Please report your answer to two decimal points (e.g., 150.43, 0.31)