2- Data were collected on life spans (in years) and gestation lengths (in days) for 62 mammals. A scatterplot of life span versus length of gestation is shown below. Life Span (years) 100- 75- 50- 25- 0 0 200 400 600 Gestation (days) a) What type of an association is apparent between life span and length of gestation? b) What type of an association would you expect to see if the axes of the plot were reversed, i.e. if we plotted length of gestation versus life span? c) Are life span and length of gestation independent? Explain your reasoning.
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What type of association is apparent between life span and length of gestation? - Based on the scatterplot, there seems to be a positive association between life span and length of gestation. As the length of gestation increases, the life span also tends to Show more…
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Data were collected on life spans (in years) and gestation lengths (in days) for 62 mammals. A scatterplot of life span versus length of gestation is shown below. a) What type of an association is apparent between life span and length of gestation? b) What type of an association would you expect to see if the axes of the plot were reversed, i.e. if we plotted length of gestation versus life span? c) Are life span and length of gestation independent? Explain your reasoning.
Qudsiya A.
A researcher wants to know if the gestation period (in days) of an animal can be used to predict life expectancy (in years). Data are recorded for 10 different animals. The scatterplot and regression line are given below: ŷ = 7.874 + 0.026x Given R-squared = 0.5266, select the correct value for the correlation coefficient, r, between the gestation period and life expectancy. -0.7257 0.5266 -0.2773 0.7257 -0.5266 0.2773 Not enough information is given.
David N.
A researcher would like to know if the gestation period of an animal can be used to predict the life expectancy. She collects the following data. Animal Gestation (incubation) Period (days) Life Expectancy (years) Cat 63 11 Chicken 22 7.5 Dog 63 11 Duck 28 10 Goat 151 12 Lion 108 10 Parakeet 18 8 Pig 115 10 Rabbit 31 7 Squirrel 44 9 (a) Draw a scatter diagram. (b) Comment on the type of relation that appears to exist between gestation period and life expectancy based upon the scatter diagram.
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