Help me, i will give a lot of points for this

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81

Question 4 of 10 2 points what is the second part of the process of investigating a question using data? a. rephrasing the question o b. describing the data c. collecting the data o d. making an inference submit