In a study about perception of climate change, a series of questions where asked to a group of volunteers adults. The first 2question were asking their primary source of news and educational level. The table below only shows the results for individuals who read newspaper. Primary Source Not High School High School But College Total of News Graduate Not College Graduate Graduate Newspapers 49 205 188 442 What type of variables are primary source of news and educational level? (2 keywords each - WITH EXPLAINATION -> NO EXPLANATION = ZERO POINTS) What test would you do to test if there is a difference in readership of newspaper between the different education level ? WITH EXPLAINATION -> NO EXPLANATION = ZERO POINTS) Calculate ONE - AND ONE ONLY - expected value. WITH CALCULATIONS DETAILS -> NO EXPLANATION = ZERO POINTS)