Creating a likert scale in adobe illustrator

#Creating a likert scale in adobe illustrator code

Often, if we analyzing individual Likert-type items we try to treat the data ordinal, but if we have several items summed into a scale, we treat the result as interval.Designing with the surrounding environment has been consistently encouraged in architectural design and urban planning since the modernist movement. The upshot here is that in order to do the addition, you had to implicitly convert those categories to numeric values. If we had different categories, for example if we change Strongly agree to This is more important than my family and friends, and health, and money, it might make sense change this coding to reflect that Agree is closer to Neutral than it is to This is more important than my familyвЂ¦. But maybe not everyone views these categories this way. That is, if we were to translate these to a continuous Agree-ness variable on the scale of 1 to 100, Neutral might be 40 to 60, Agree 60 to 80, Strongly agree 80 to 100. I think probably with Strongly disagree, Disagree, Neutral, Agree, Strongly agree, it does make sense to assume equal spaced categories. With Likert-type items, if we want to add the results into a scale, we need to assume the intervals between the categories.

#Creating a likert scale in adobe illustrator code

In the second case we could code the flavors -6, 0, 1. In the first case we could code the flavors -1, 0, 1.

Then itвЂ™s the case that I need four strawberries to equal one vanilla. But given the same ordinal variable, it could be that chocolate gives 9 points, vanilla 8, and strawberry 2. If it were the case that chocolate gives me 9 pleasure points, vanilla 6, and strawberry 3, then, for example we could add up the points, and say, for example, that eating strawberry twice gives me the same amount of pleasure as eating vanilla once. LetвЂ™s say thereвЂ™s a fungible quantity of the amount of pleasure I get from eating each ice cream. Imagine I rank chocolate, vanilla, and strawberry ice cream as strawberry < vanilla < chocolate. If you have truly ordinal values, thereвЂ™s no logical way to add or subtract the values, unless you assume the intervals between the categories. The answer is given by the initial comment by In order to be able to add up the individual responses, those responses have to be assumed to be interval. My intuition is that it might be more problematic if the questions are very emotionally laden. It's another source of measurement error, but probably not a huge one, at least in most cases. So, we can't know that adding Likert items is OK, but it seems to be. There's also been work on the meanings people tend to assign to words such as 'very', 'extremely' and so on (sorry, but I don't have citations - it's been a long time since I looked at this). There has actually been some work on this (I looked at some of it 20+ years ago when working on my master's project) and it seems about right (at least on the cases that were studied). We also assume that different items are about equal and that any differences between people are about equal. That is, we assume that the gaps between the items are about equal. Maybe I use 'strongly' more easily than you do.Д«ut, while that's how it works mathematically, no one codes Likert items that way because it doesn't make sense. Worse, it means that the coding could be different on different items and different for different people. Technically, though, 'ordinal' means that you could just as well code them 1,2,301,301,400010019. It wouldn't matter much which of the above codings you used (as long as you were consistent). These would usually be given numeric labels such as 1,2,3,4,5, or perhaps 2,1,0,-1,-2 and, if you had a lot of questions, you would add them up. Suppose, for example, your questionnaire has questions with answers that can be 'Strongly agree', 'agree', 'neutral', 'disagree' and 'strongly disagree' (fairly typical Likert scale, but substitute as you wish). The trouble is that Likert scales are really in-between ordinal and interval. It is quite common to add Likert items, even though this (as both WHuber and Sal have noted) requires that we are treating them as interval data.