4 Skill Builder: Plots 0 Points Grading comment: We are using an employee data set containing the records of all 400 employees for a start-up company founded in the early 2000s. The following data were collected in 2010 and contains the following variables: salary: annual salary (in dollars) age: age of the employee (in years) edu: years of education (in years) startsal: starting salary (in dollars) jobtime: time with the company (in months) prevexp: previous work experience (in months) minority: Minority or Non-Minority gender: Female or Male jobcat: Clerical, Custodial, or Manager Question 4.1 Observational Units Q4.1 Observational Units 0 Points Grading comment: Using the variable startsal, the following plots were created using R: Plot 1: The population distribution of the variable startsal Plot 2: The sample distribution of a sample of 100 observations Plot 3: The sampling distribution of sample means when n = 100 n=100 Screenshot_2024-05-12_at_11.30.42_PM.png Determine which plots have the same observational units. Choice 1 of 3: Plot 1 Choice 2 of 3: Plot 2 Choice 3 of 3: Plot 3