response variable increase or decrease as lhe explanatory vanable Increases? 4. | Statistical Literacy Describe the relationship between two variables whom the correlation coefficient r is (a) near -1. (b) near 0. (c) near 1. CRITICAL THINKING 5. | Critical Thinking: Linear Correlation Look at the following diagrams. Which show high linear correlation, moderate or low linear correlation, or no linear correlation? 29ldo (a) (b) The (c) 6. | Critical Thinking: Linear Correlation Look at the following diagrams. Which show high linear correlation, moderate or low linear correlation, or no linear correlation? Ng (a) (b) (c) ValTables? Explain. 11.| Interpretation Trevor conducted a study and found that the correlation be- tween the price of a gallon of gasoline and gasoline consumption has a linear correlation coefficient of -0.7. What does this result say about the relation- ship between price of gasoline and consumption? The study included gasoline prices ranging from $2.70 to $5.30 per gallon. Is it reliable to apply the results of this study to prices of gasoline higher than $5.30 per gallon? Explain. bost bog 12. | Interpretation Do people who spend more time on social networking sites wollot adT soigod spend more time using Twitter? Megan conducted a study and found that the onsmolal sleupirs leno correlation between the times spent on the two activities was 0.8. What does uo பறற vd bnuo od vem ctehe this result say about the relationship between times spent on the two activi- ties? If someone spends more time than average on a social networking site, can you automatically conclude that he or she spends more time than average using Twitter? Explain. A.C S.E 13. | Veterinary Science: Shetland Ponies How much should a healthy Shetland pony weigh? Let x be the age of the pony (in months), and let y be the aver- eod nir oy snil ods wsib age weight of the pony (in kilograms). The following information is based nonde 10oeobom wol ai no on data taken from The Merck Veterinary Manual (a reference used in most 2.2 e.E e.. veterinary colleges). Exc en.28 02cup/g 24 12 18 baor b У 0018:COubrntoyeue 95 140 170 m 185 0 0sooni or 60 lldoesd nl 2u smoll e (a) Make a scatter diagram and draw the line you think best fits the data. geinon ooimod bns ol bs valg lledoasd (b) Would you say the correlation is low, moderate, or strong? positive or negative? mil 001g annomon