Hey, I'm really confused with Question 4 part b)? I've found the positioning points but I don't know how to find the quartile values. When I calculate it myself, I get a different answer to what I get when I use Excel. Please help. Ok, for Central Office 1, I got 5.25 for the positioning point of the first Quartile. What am I supposed to do after that? Do I average the values on the sides of the positioning point? Like 0.93 + 0.97/2. Or do I work it out the way it is worked out in Thinking Challenge in our lecture notes? Which is; 0.93 +.25 *(0.97 -0.93).
Or do I work it out using one of the ways that is shown in the textbook on page 92. Which is I round the positioning point to the nearest integer and select the numerical value of the corresponding observation.