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Exercise 4.1, p. 219State what type of variable each of the following is. If a variable isquantitative, say whether it is discrete or continuous.(a) Religious preference.
Qualitative.(b) Amount of milk in a glass.
Quantitative continuous.(c) Credit-card numbers.
Qualitative.(d) The number of students in a class of 35 who turn in a term paper
Exercise 4.1, p. 219State what type of variable each of the following is. If a variable isquantitative, say whether it is discrete or continuous.(a) Religious preference.
Qualitative.
(b) Amount of milk in a glass.Quantitative continuous.
(c) Credit-card numbers.Qualitative.
(d) The number of students in a class of 35 who turn in a term paperon time.Quantitative discrete.
Exercise 4.1, p. 219State what type of variable each of the following is. If a variable isquantitative, say whether it is discrete or continuous.(a) Religious preference.
Qualitative.(b) Amount of milk in a glass.
Quantitative continuous.(c) Credit-card numbers.
Qualitative.(d) The number of students in a class of 35 who turn in a term paper
Exercise 4.1, p. 219State what type of variable each of the following is. If a variable isquantitative, say whether it is discrete or continuous.(a) Religious preference.
Qualitative.(b) Amount of milk in a glass.
Quantitative continuous.
(c) Credit-card numbers.Qualitative.
(d) The number of students in a class of 35 who turn in a term paperon time.Quantitative discrete.
Exercise 4.1, p. 219State what type of variable each of the following is. If a variable isquantitative, say whether it is discrete or continuous.(a) Religious preference.
Qualitative.(b) Amount of milk in a glass.
Quantitative continuous.(c) Credit-card numbers.
Qualitative.(d) The number of students in a class of 35 who turn in a term paper
Exercise 4.1, p. 219State what type of variable each of the following is. If a variable isquantitative, say whether it is discrete or continuous.(a) Religious preference.
Qualitative.(b) Amount of milk in a glass.
Quantitative continuous.(c) Credit-card numbers.
Qualitative.
(d) The number of students in a class of 35 who turn in a term paperon time.Quantitative discrete.
Exercise 4.1, p. 219State what type of variable each of the following is. If a variable isquantitative, say whether it is discrete or continuous.(a) Religious preference.
Qualitative.(b) Amount of milk in a glass.
Quantitative continuous.(c) Credit-card numbers.
Qualitative.(d) The number of students in a class of 35 who turn in a term paper
Exercise 4.1, p. 219State what type of variable each of the following is. If a variable isquantitative, say whether it is discrete or continuous.(a) Religious preference.
Qualitative.(b) Amount of milk in a glass.
Quantitative continuous.(c) Credit-card numbers.
Qualitative.(d) The number of students in a class of 35 who turn in a term paper
The two most basic characteristics of a sample that we areinterested in are averages and proportions.
How can we represent a proportion in a graph?How can we represent an average in a graph?What other characteristics might we want to represent in a graph?
The two most basic characteristics of a sample that we areinterested in are averages and proportions.How can we represent a proportion in a graph?How can we represent an average in a graph?
What other characteristics might we want to represent in a graph?
The two most basic characteristics of a sample that we areinterested in are averages and proportions.How can we represent a proportion in a graph?How can we represent an average in a graph?What other characteristics might we want to represent in a graph?
Definition (Pie chart)A pie chart is a display of qualitative data in which each category isrepresented by a slice of a pie. The size of each pie slice isproportional to the number of observations in that category.
Use the percentage associated with the category to compute thecentral angle of the pie slice.For example, 25% of 360◦ = 90◦.A pie chart facilitates the comparison of one category to the whole.
How did the Farmville weather in January 2009 compare to theFarmville weather in January 2010?It is not a good idea to try to compare the two pie charts.Instead, a bar graph should be used.
Definition (Bar graph)A bar graph is a display of qualitative data in which each category isrepresented by a rectangle. The height of the rectangle is proportionalto the number of observations in that category.
The horizontal scale shows the categories.The vertical scale shows the counts or percentages.The horizontal/vertical orientation may be reversed.A bar graph facilitates the comparison of one category to another.
After the Republican debate last week, MSNBC conducted asurvey asking the viewers to tell which candidate they believe wonthe debate.The results were summarized in a bar graph.http://firstread.msnbc.msn.com/...