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.
Added by David C.
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Step 1: Plot the points on a scatter diagram with gestation period on the x-axis and life expectancy on the y-axis. Show more…
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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.
Animal Gestation Periods The accompanying table also. shows the gestation period (in days) for some animals. The gestation period is the length of pregnancy. Graph the gestation period and describe the distribution. If there are any outliers, identify the animal(s) and give the gestation periods. If you were to include humans in this graph, where would the data point be? The human gestation period is about 266 days.
Of the labeled points, which represents the animal for which the ratio of life expectancy to gestation period is greatest? A) A B) B C) C D) D
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