Data on a sample of individuals 30 years and older Present Marital Owns a Years of school ID income status BMW completed 17,000 Single No W N P 24,000 Divorced No 30,000 Married Yes 30,000 Married No 33,000 Single No 35,000 Separated Yes 45,000 Married No \\D 00 J 48,000 Married No 48,000 Married Yes 10 54,000 Single Yes 4 Use data from the sample above to answer the following questions. Remember each row is one person (one data point or one subject of study) What is the size of sample? How many variables are there in this data set? What is the mode for marital status? Married What is the median for years of school completed? What is the mean for variable "Present Income"