The data set shows the october 1 noon temperatures in degrees fahrenheit for a particular city in each of the past 6 years. a) what is the five-number summary of the data set? b) what is the mean, x, of the data set? c) what is the sum of the squares of the differences between each data value and the mean? use the table to organize your work. d) what is the standard deviation of the data set? use the sum from part (c) and show your work.