The Environmental Protection Agency (EPA) uses a measure called the Pollutant Standards Index (PSI) to measure air quality in a city. A PSI reading over 1.00 indicates a day when the air quality is considered unhealthy. The measurements represent the number of days in 1995 that the PSI was over 100 for twenty metropolitan areas in the U.S. Midwest. 0, 0, 0, 1, 1, 1, 1, 1, 2, Z, 3, 4, 4, 4, 4, 5, 7, 7, 11, 14 A careless employee originally recorded a number that was at least 20 times larger than 14: 0, 0, O, 1, 1, 1, 1, 1, 2, 2, 3, 4, 4, 4, 4, 5, 7, 7, 11, (much larger than 14) The employee's mistake would have the following effect: The median would 0 increase 0 decrease 0 stay the same The mean would 0 increase 0 stay the same 0 decrease The mode would 0 decrease 0 stay the same O increase 0 increase The IQR would 0 increase 0 stay the same 0 decrease The standard deviation would 0 decrease 0 stay the same 0 increase