This week we talked about some more terminology and topics. We talked about terms like census, sampling, opinion, marketing research, quantitative research, paid survey, and questionnaire. It turns out that my memory was a little hazy when it came to defining these terms. I had some basic understanding but there were some missing connections that I neglected to make. It was good to review them. I have to admit that I am still a little confused about skew. I understand the creation of the "tail" when taking sets of numbers and deciding how the typical bell curve would look but I don't quite understand how to decide if its skewed to the left or right.
One of the main focuses this week was the survey. We took a look at a website called Capterra that listed good survey resources, both online and offline software packages. It might have a slight bias towards their "featured" survey tools but it still would be a good place to start when looking for survey options. We were asked to review both free and paid survey services and analyze 3 of each. We found that almost every online survey tool had a certain level of free features and then an option to upgrade by paying for some of the more powerful features. Survey Monkey, Adobe FormsCentral, and Google Forms were my favorites.
Laurence, A non graphical way to keep skew straight is to compare the mean and median of the data. If the mean is smaller (to the left) of median then the skew is negative (towards the direction of the negative half of the number line). If mean is larger than median then the opposite is true.
ReplyDelete