Jonathan Hill Chapter 12 Test 0 Question 1 Which lue implies the stronger linear relationship Select one. Z0/1pt'02 0 Question 2 B 0/1 pt 0 z Choose the most appropriate completion of the sentence. In order to indicate a strong correlation between variables, the correlation coefficient will be ' near 1 ' near 0 , near 10 ' near -1 7' near -1 or 1 , near 1/2 . Question 3 E 0/1 pt '0 Z Choose the most appropriate completion of the sentence. In order to indicate a strong correlation between variables, the correlation coefficient will be ' ,' near 0 I ' near1 ' near -1 or 1 '- ' near 10 ', near 1/2 'near -1 0 Question 4 B 011 pt 0 z Choose the most appropriate completion of the sentence. In order to indicate a strong negative correlation between variables, the correlation coefficient will be ',.' near 1/2 ' ' near -10 L Less than or equal to -0t7 or greater than or equal to 0'7 near 0 7' Less than or equal to -0.7 _ ' near 10 ' , ' Greater than or equal to 0.7 . Question 5 l2: 0/1 pt '0 Z 3 Which of the following pairs of variables is likely to have a positive correlation? b If the correlation coefficient is negative, this means The speed of a car and the time to its destination there is no correlation between the variables 7 A person's height and their favorite color the test statistic, t, can not be calculated The square footage of a home and its price ' there is a strong correlation between the variables Number of hours you train at a skill and the number of mistakes you make doing that skill. 'the regression line can be used for prediction Your height and your intelligence the calculation was done wrong The number of alcohol you drink and your driving ability the slope of the regression line is negative 0 Question 7 I3 0/1 pt '0 z Which of the following pairs of variables is likely to have a negative correlation? A study was done asking people how much money they spend per month on their natural gas bill and how much money per month they spend on their electric bill. The correlation 1' was found to be 0.94 and the p-value for correlation was 0'0003. Then a person with a high natural gas bill will also have a A person's height and their favorite color The number of miles run and the number of calories burned high electric bill. The square footage of a home and its price _ t Years of education and salary rue V The speed of a car and the time to its destination false 0 Question 8 IE 011 pt '0 Z Which of the following pairs of variables are likely to have a positive correlation? Check all that apply. A person's height and their favorite color The speed of a car and the time to its destination 7 Years of education and salary The square footage of a home and its price The number of miles run and the number of calories burned '> 0 Question 6 [/1 0/1 pt '0 Z Match each scatterplot shown below with one of the four specified correlations. C Match each scatterplot shown below with one of the four specified correlations. a. 0.02 a. 0.44 + b. -0.92 b. -0.99 O c. -0.35 C. -0. 14 d. 0.99 d. 0.98 CO O Q O Q O O O O O O O V -V O 28 0 O 8098 OO O O O O 88 spo O C OO O Q O O O OO OO O O OQ O QMatch each scatterplot shown below with one of the four specified correlations. Consider the following scatter plot relating a variable x to a variable y. a. 0.52 b. -0.05 c. 0.93 d. -0.94 O O 1808 0 oo ag O Which best describes the correlation? DO Positive and Strong O Positive and Weak O Negative and Strong O O Negative and Weak cca O Question 12 0/1 pt O 2 O o O The data below is 12 observations of Fall semester student credit hours (x) and Spring semester student credit hours (y). Calculate the linear correlation coefficient, r. Enter your answers to two decimal places. C X hours | hours 12 15 7 3 POT 14 O 6 3 11 7 16 18 14 16 15 14 10 15 11 15 OC 13 7 OO O O O Q Question 13 0/1 pt O 2 Question 11 0/1 pt 9 2