Question

A. Bald eagles are an endangered bird species suffering from loss of habitat and pesticide contamination of rivers. A field of biologists studying the reproduction of bald eagles records the following variables. Which of these variables are categorical, and which are quantitative? (a) Number of eggs laid (b) Incubation period (in days) (c) Parental care (mostly mother, mostly father, both parents) (d) Nest size (in centimeters) (e) Presence of pesticides in samples of local waters (yes/no) B. Mercury is a metal highly toxic to the nervous system. Below is a small part of an EESEE data set ("Mercury in Bass") from a study that assessed the water quality of 53 representative lakes in Florida Lake name pH Chlorophyll (mg/l) Avg. mercury in fish (parts per million) Number of fish sampled Age of data Alligator 6.1 0.7 1.23 5 year old Annie 5.1 3.2 1.33 7 recent Apopka 9.1 128.3 0.04 6 recent Blue Cypress 6.9 3.5 0.44 12 recent Brick 4.6 1.8 1.20 12 year old Bryant 7.3 44.1 0.27 14 year old a) What individuals does this data set describe? b) In addition to the lake's name, how many variables does the data set contain? Which of these variables are categorical and which are quantitative? C. Here are the number of deaths among persons aged 15 to 24 years in the United States in 2010 due to the leading causes of death for this age group: accidents, 12015; homicide, 4651; suicide, 4595; cancer, 1594; heart disease, 984; congenital defects, 401 a) Make 2 bar graphs of these data, one with bars ordered alphabetically (by death type) and the other with bars in order from tallest to shortest b) What additional information do you need to make a piece chart?

          A. Bald eagles are an endangered bird species suffering from loss of habitat and pesticide
contamination of rivers. A field of biologists studying the reproduction of bald eagles records the
following variables. Which of these variables are categorical, and which are quantitative?
(a) Number of eggs laid
(b) Incubation period (in days)
(c) Parental care (mostly mother, mostly father, both parents)
(d) Nest size (in centimeters)
(e) Presence of pesticides in samples of local waters (yes/no)
B. Mercury is a metal highly toxic to the nervous system. Below is a small part of an EESEE data set
("Mercury in Bass") from a study that assessed the water quality of 53 representative lakes in
Florida

Lake name pH Chlorophyll (mg/l) Avg. mercury in fish (parts per million) Number of fish sampled Age of data
Alligator 6.1 0.7 1.23 5 year old
Annie 5.1 3.2 1.33 7 recent
Apopka 9.1 128.3 0.04 6 recent
Blue Cypress 6.9 3.5 0.44 12 recent
Brick 4.6 1.8 1.20 12 year old
Bryant 7.3 44.1 0.27 14 year old

a) What individuals does this data set describe?
b) In addition to the lake's name, how many variables does the data set contain? Which of these
variables are categorical and which are quantitative?
C. Here are the number of deaths among persons aged 15 to 24 years in the United States in 2010
due to the leading causes of death for this age group: accidents, 12015; homicide, 4651; suicide,
4595; cancer, 1594; heart disease, 984; congenital defects, 401
a) Make 2 bar graphs of these data, one with bars ordered alphabetically (by death type) and the
other with bars in order from tallest to shortest
b) What additional information do you need to make a piece chart?

A. Bald eagles are an endangered bird species suffering from loss of habitat and pesticide
contamination of rivers. A field of biologists studying the reproduction of bald eagles records the
following variables. Which of these variables are categorical, and which are quantitative?
(a) Number of eggs laid
(b) Incubation period (in days)
(c) Parental care (mostly mother, mostly father, both parents)
(d) Nest size (in centimeters)
(e) Presence of pesticides in samples of local waters (yes/no)
B. Mercury is a metal highly toxic to the nervous system. Below is a small part of an EESEE data set
("Mercury in Bass") from a study that assessed the water quality of 53 representative lakes in
Florida

Lake name pH Chlorophyll (mg/l) Avg. mercury in fish (parts per million) Number of fish sampled Age of data
Alligator 6.1 0.7 1.23 5 year old
Annie 5.1 3.2 1.33 7 recent
Apopka 9.1 128.3 0.04 6 recent
Blue Cypress 6.9 3.5 0.44 12 recent
Brick 4.6 1.8 1.20 12 year old
Bryant 7.3 44.1 0.27 14 year old

a) What individuals does this data set describe?
b) In addition to the lake's name, how many variables does the data set contain? Which of these
variables are categorical and which are quantitative?
C. Here are the number of deaths among persons aged 15 to 24 years in the United States in 2010
due to the leading causes of death for this age group: accidents, 12015; homicide, 4651; suicide,
4595; cancer, 1594; heart disease, 984; congenital defects, 401
a) Make 2 bar graphs of these data, one with bars ordered alphabetically (by death type) and the
other with bars in order from tallest to shortest
b) What additional information do you need to make a piece chart?

Added by Robert P.

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