Did I do this correctly??please help

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

Which term best describes the association between variables a and b

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at link to the chart is here