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Questions and Answers > University of California, Los Angeles STATS 10 Introduction to Statistical Reasoning Homework #1

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University of California, Los Angeles STATS 10 Introduction to Statistical Reasoning Homework #1 1.1: Variable in Table 1A, how many variables are there? height (inches), weight (pounds), num ... ber of siblings, college units this term, and handedness). 1.2: People in Table 1A, there are observations on how many people? 1.3: Are the following variables, from Table 1A, numerical or categorical? Explain. or left. There is no number involved. 1.4: Are the following variables, from Table 1A, numerical or categorical? Explain. 1.5: Give an example of another numerical variable we might have recorded for the students whose data are in Table 1A? 1.6: Give an example of another categorical variable we might have recorded for the students whose data are in Table 1A? 1.21: Two-way Table from Data a. Report how many students are in each of the four cells of the table by writing these values in your b. Sum the numbers of students in each row and each column, and put these sums into your table. Also find the total number of students, and put it in the lower right corner. c. What percentage of the females are right-handed? d. What percentage of the right-handed students are female? e. What percentage of the students are right-handed? f. If the percentage of right-handed females remained roughly the same and there were 70 females, how many of them would be right-handed? a. Arrange the data as a two-way table and report how many students are in each cell. b. Sum the numbers of students in each row and each column, and put these sums into your table. Also put the total number of students in the lower right corner. c. What percentage of the females have brown eyes? d. What percentage of the people who have brown eyes are female? e. What percentage of the people have brown eyes? f. If the percentage of brown-eyed females was roughly the same and there were 60 females, how many of them would have brown eyes? population. What is the total predicted U.S. population in 2050? was the total population (of this age group) in 2007? [Show More]

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