You are a researcher at a large state university interested in the experiences of college graduates.You have downloaded the public use file for the 2013 National Survey of College Graduates, funded by NSF and collected by the Census Bureau. You notice that there are 9 variables on the data set that have to do with job satisfaction. Run a frequency on these variables,and then set the missing value based on the frequency distribution.Alright, you now have 9dichotomous variables with their missing values defined. You want to use these variables in higher order statistical tests. So, using those nine variables, create a simple composite index of job satisfaction. In this case, count the number of times the respondent says s/he is "somewhat" or "very" satisfied. Don't forget to 'clean up' your created variable by setting the decimal to 0 and making it a scaled variable. Then, answer the following questions,remembering to round your responses to the nearest hundredths (XX.X) and include any trailing zeros.

How many cases have valid responses?

What is the mean of this index?

What is the median of this index?

What is the standard deviation of this index?