(2 unread)-dboyer1 20 5-Day Weather Forecas E Ravens vs. Bengals-Ge chegg Study
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(2 unread)-dboyer1 20 5-Day Weather Forecas E Ravens vs. Bengals-Ge chegg Study | Guided S -Course Content Take Test: Q2: ScattX https://bb csuohio blackboard com webapps assessment take launch sp?course assessment id- 10561 71&course id- 101 1 531 &content d- 29421m Question Completion Status: ESTIO 5 points Answer Provide an appropriate response. Almost all of the acidity of soda pop comes from the phosphoric acid which is added to give them a sharper flavor. Is there an association between the pH of the soda and the amount of phosphoric acid (in grams)? The correlation between pH and phosphoric acid is -0.991. Describe the association. O Weak linear association in a positive direction O No evidence of association O weak linear association in a negative direction O Very strong linear association in a negative direction O Strong linear association in a positive direction QUESTION 13 Select the most appropriate answer What is a variable other than x and y that simultaneously affects both variables called? 5 points Save Answer O the explanatory variable the response variable O none of these. O a lurking or confounding variable O a significant variable Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Close Window Save and Submit O Type here to search 10:34 PM 9/13/2018Explanation / Answer
Q. 12
Mod of correlation coefficient is close to 1 (here, 0.991) indicates very strong correlation (as value close to 0 indicates weak correlation)
Sign is negative hence it indicate negative relationship, that is increase in one variable results in decrease of other
Thus, option 4. Very strong linear association in a negative direction
Q.13
Option 4. A lurking or cofounding variable
as A lurking variable is a variable that is not included as an explanatory(x in our case) or response(y in our case) variable in the analysis but can affect the interpretation of relationships between variables
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