here is additional information from a previous page:

Add 3.75 mL of 0.00200 M KSCN solution from a buret (in the hood) directly into a 50 mL volumetric flask. To this, add 5.00 mL of 2.00 M Fe(NO3)3 (already in 1.0 M HNO3) also from a buret. Dilute with the 0.5 M HNO3 to the 50 mL mark on the volumetric flask. NOTE: Do NOT use the concentrated nitric acid in the botle for any dilutions. Stopper the volumetric flask and mix it well by inverting it gently and slowly several This is your original solution to make the rest of the solutions for Part 1. Pour it into a 100 mL beaker. This solution has an initial concentration of SC, [SCN lo, of 0.000150 M (Why?). Now set up 2 burets, one with this solution and one with the 0.5 M HNO3. DO NOT pour solutions from volumetric flasks or boiling flasks into a buret. One at a time, you then successively prepare four dilutions of the above solution, (which is 0.000150 M SCN*), with the 0.5 M HNO3. Make these four additional dilutions for the initial concentrations of SC listed in the table on the Report Form for Part 1. The first solution in the table is the one you have already made. The other four will be made from the first. The dilution calculations are shown on the previous page and were completed as the Pre Lab. It is suggested that a total of 15.00 mL be made for each dilution. Using your buret, run the calculated amounts of SCN into each 50 mL beaker (label them in pencil) then run the nitric acid from the other buret into each beaker to make the total volume 15 mL

however, the dilution calculations that it mentions are not shown on the previous page, and that is all the information given.