We are looking at HIV positive rates among rural Chinese farmers. One of the variables studied was education level, which was recorded as 'illiterate," "primary," and "secondary." What type of

variable is education level in this example?

The table shows the distances travelled by a paper aeroplane. a. find the range and interquartile range of the data. the range is feet. the interquartile range is __feet. b. interpret the range and interquartile range of the data. __ feet the distances travelled by the paper aeroplane varied by no more than__ feet. the middle half of the distances travelled by the paper aeroplane varied by no more than __ feet.