To maintain quality control in a brewery, every 20th bottle of beer coming off the production line was opened and tested, after the first bottle was randomly selected at the beginning of the day. This led to too much beer consumption on the job. The manager decided to use a new sampling plan. The new method used a computer to randomly select 1% of the bottles produced in a given day where each bottle had the same probability of being selected. What is the name of the second sampling method?

Which one of these statistics is unaffected by outliers?  

Which measure of central tendency is affected by every score in the distribution?  

What is the level of measurement for the following variable? Prison security level, measured as minimum, medium, and maximum _____________

What is the level of measurement for the following variable? Suspect’s race measured as White, Black, Latino, and Other ________

The mean is always one of the data points.  

-2∈ℤ{“version”:”1.1″,”math”:”-2∈ℤ”}

Prove the following statement by contradiction. If 3n+2 is odd, then n is odd. 

The A-form of DNA has which characteristic feature?

The nucleic acid base thymine is which of the following?