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E1.1. Codebook Variable: Enrolled Definition: Currently enrolled in school Type: Categorical (1 = Yes, 2 = No) Variable: Units Definition: Number of units the student is enrolled in Type: Continuous Variable: Grade Definition: Overall grade Type: Continuous Data:

Exercise 2.2 Codebook Variable: ID Definition: ID number Type: String Variable: Volunteer_Hours Definition: Volunteer hours worked per week Type: Continuous Data:

Exercise 3.1 A survey was conducted in Professor Lamm’s class and Professor Milner’s class. The question that students responded to is, “How many siblings do you have?” Data set: Ch 03 – Exercise 01.sav Codebook Variable: Class Definition: Class designation Type: Categorical (1 = Prof. Lamm, 2 = Prof. Milner) Variable: Siblings Definition: Number of siblings Run descriptive statistics and a histogram with a normal curve for Siblings for the whole data set. Run descriptive statistics and a bar chart for Class for the whole data set. Run descriptive statistics and a histogram with a normal curve for Siblings for members of Professor Lamm’s class only. Run descriptive statistics and a histogram with a normal curve for Siblings for members of Professor Milner’s class only.

Exercise 3.2 While waiting in line to donate blood, donors were asked, “How many times have you donated before?” The researcher recorded their gender and number of prior donations. Data set: Ch 03 – Exercise 02.sav Codebook Variable: Gender Definition: Gender Type: Categorical (1 = Female, 2 = Male) Variable: Donated Definition: Total number of blood donations given before today Type: Continuous Run descriptive statistics and a histogram with a normal curve for Donated for the whole data set. Run descriptive statistics and a bar chart for Gender for the whole data set. Run descriptive statistics and a histogram with a normal curve for Donated for Females only. Run descriptive statistics and a histogram with a normal curve for Donated for Males only.

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