SPSS: Arranged Frequency Distribution
FIRST STEP: Under the Transform menu, choose Image Binning… This command assists you in creating a fresh variable that groups the data. You will then use the new variable to create a grouped frequency distribution.
• In the Variables list box, click on wt (weight) and then within the arrow to maneuver it towards the Variable to Band list box. Just click Continue.
• Select wt in the kept box. Near to the top with this dialog container, enter a name to your new adjustable (such while wt_groups) inside the " Binned Variable” container (cannot possess any areas in the name).
• Nearby the lower correct, click Make Cutpoints…
• We are going to generate Equal Width Intervals, which is the standard selection in this dialog field. You have to fill out 2 from the 3 fields; for the purposes, fill out " Number of Cutpoints” and " Width”.
• Because discussed previously mentioned, generally 10-15 intervals works well. The Number of Cutpoints = [number of intervals – 1]. (Why? * ) Thus, if we like 10 periods, we'll get into 9 in the " Volume of Cutpoints” box. • To get the " Width” of every interval: (a) find the between the cheapest and maximum score in the data (you actually can see these kinds of values without your knowledge dialog container behind the active dialog box); (b) divide the by the quantity of intervals (in this model, [122. 7 – 65] / 12 = your five. 77); and (c) round up to the whole number (6. 0). Enter into that number while the period Width.
Because one particular cutpoint makes 2 groups. For example , for those who have one apple and you " cut" it in half (one cutpoint), you have 2 apple halves. In case you cut one of those halves (so now you include a total of two slashes to the apple), you'll have a few pieces of apple. Make another cut (3 total cuts to the apple) and you'll include 4 items of apple, and so on.
So , you can always have an additional category than you have cutpoints.
• Just click in the First Cutpoint Location box, which should fill in quickly. In this case, the value sixty-five. 00 immediately appears. Simply click Apply to...