You first need to put all the numbers in order from least to greatest, then you need to start the left whisker with the lowest number for this problem it would be 7 then you need to find first quartile, which is going to be the start of your box, find the median, which is the middle, of the box (a dotted line down the middle of the box) and the third quartile is going to be the closing of the box on the right side then you draw your whisker to the highest number which would be 43. to find first and third quartiles your multiply by either .25 for first quartile and .75 for third, I'm sure you know how to find median. :)
