(a) strongly SAC rently (b) roughly symmetric. uals: It is rar (c) strongly skew
ID: 3201419 • Letter: #
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(a) strongly SAC rently (b) roughly symmetric. uals: It is rar (c) strongly skewed to the left and its incid 1.21 Here are the IQ test scores of 10 randomly chosen fifth- cases per 10 among indiv grade students: 145 139 126 122 125 130 96 110 118 118 of incidence (a) skewe (b) roughly To make a stemplot of these scores, you would use as stems (c) skewe (a) 0 and 1 CHAPTER 1 EXERCISES 1.23 Endangered species. are an endangered bird (a) What Bald eagles species suffering from loss of habitat and pesticide contami (b) In add the da nation of rivers. A field biologist studying the reproduction of bald eagles records the following variables. Which of these catego variables are categorical, and which are quantitative? 1.26 Deaf deaths an (a) Number of eggs laid States in (b) Incubation per od (in days) (c) Parental care (mostly mother, mostly father, both group: acc cer, 1594: parents (d) Nest size (in centimeters) (a) Make (e) Presence of pesticides in samples of local waters (yesno) alpha 1.24 Eating habits. You are preparing to study the eating order habits of elementary school children. Describe two categor- you ical variables and two quantitative variables that you might (b) Wha record for each child. Give the units of measurement for the char quantitative variables. 1.27 Ma Mercury in lakes. Mercury is a metal highly toxic to the herbivom 1.25 nervous system. Below is a small part of an EESEE data set and estu ("Mercury in Bass") from a study that assessed the water qual the Flor ity of 53 representative lakes in Florida: of death own of of deathExplanation / Answer
Dear student, I am only answering the first question as per Chegg Guidelines.
1.23
(a) Number of eggs laid is a quantitative variable
(b) Incubation period is a quantitative variable
(c) Parental care is a categorial variable
(d) Nest size is a quantitative variable
(e) Presence of pesticides is a categorical variable.
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