Question Help: 8 Message instructor . Question 14 80/1 pt '03 7.599 The scatter plot shows the relationship between the number of minutes studying for a test (x) and the number of mistakes made (y). The graph shows the scatterplot of the data and a fitted line. ,9 t #14) WW 501 \"q: Select True or False for each statement based on the scatter plot. True/False There is a positive association between True False the amount of time studying for a test and the number of mistakes made. Students who studied for a longer period True False of time tended to make more mistakes. There is a linear association between time True False studying and number of mistakes. Question Help: 8 Message instructor 0 Question 15 Bonm '03 399 Here is a bivariate data set. This data can be downloaded as a ",csv file with this link: Download CSV Find the correlation coefficient and report it accurate to three decimal places. r= X V 87.8 69 95.9 61 ,2 68.6 54,3 51.6 36,7 94. 3 62.1 100.9 61 .4 23 30,9 39.9 36,6 What proportion of the variation in y can be explained by the variation in the values of x? Report answer as a percentage accurate to one decimal place. R2: 96 Question Help: 8 Message instructor . Question 16 80/1 pt '03 399 Based on the data shown below, calculate the correlation coefficient (rounded to three decimal places) X Y 4 38.82 5 37.39 6 33.16 7 30.93 8 30.2 9 29.87 10 24.94 11 22.11 12 7.2.98 13 17.95 14 19.42 15 15.79 16 12.26 17 9.83 18 8.5 I 7 Based on the data shown below, calculate the correlation coefficient (to three decimal places) x y 2 13 3 14.05 4 20 5 21.15 6 22.5 7 25.15 B 26.8 9 27.45 10 30.1 11 35.25 12 37 13 39.25 Question Help: 8 Message instructor 0 Question 1 8 Please round all answers to 2 decimal places. Given the table below, use your calculator to find the Correlation Coefficient x 9.7 5,5 8 6 3,6 1.1 y 213 13,8 25.6 16,7 8.5 2.7 Put your answer here: Question Help: 0 Question 19 ' Video MMessageinstructor 80/1 pt'03 399 80/1pt'03 899 Rivers in North Carolina contain small concentrations of mercury that can accumulate in fish over their lifetimes. The concentration of mercury in fish tissue can be obtained by catching fish and sending samples to a lab for analysis. A study was conducted on fish from the Waccamaw and Lumber Rivers to investigate mercury levels in tissues of largemouth bass. At several stations along each river a group of fish were caught, weighed and measured; in addition a filet from each fish was sent to a lab so that the tissue concentration of mercury could be determined. In all, 171 fish were caught at 15 different research stations along the Waccamaw and Lumber Rivers. Data from fish caught at one of these stations is shown in the following table: length weight 1616 47.9 1862 48. 7 2855 55. 7 1199 45. 2 1329 44. 7 1225 43.8 878 38. 5 1455 45. B 1220 44.6 1933 49.4 Compute the correlation between length and weight for these fish. (Assume the correlation conditions have been satisfied and round your answer to the nearest 0.001 .) 'r=' Question Help: E] Video 8 Message instructor 0 Question 20 a 0/1 pt '0 3 3 99 Based on the data shown below, calculate the correlation coefficient (to three decimal places) x Y 294 29,4 29,4 24,4 28.2 29,8 muomaw 'r=' Question Help: 3 Video 8 Message instructor ,4 gLnnual high temperatures in a certain location have been tracked for several years. Let 'X' represent the year and 'Y' the high temperature. Based on the data shown below, calculate the correlation coefficient (to three decimal places) between 'X' and 'Y'. Use your calculator! A 3 11.3 4 1e 5 17.1 6 21.2 7 22.4 3 23.1 9 23.9 10 27.5 11 30.9 12 31.9 13 33.5 14 33.3 15 39.1 16 41.3 17 41.2