Hi Everyone-
Well, we all had a new experience as we began using real mathematics. Hopefully people didn't get too scared about it as we began to see how it is just a foreign language like any other language. Remember, we will be meeting next week in the Trani Life Sciences Building Room 104 classroom again. So please come directly there. WARNING: You have until this Friday at 5pm to hand in your Step 1 paper, if you have not done so.
Let's summarize what we need to take home from today's class.
(1) We went over the idea of a distribution and its properties. We talked about "count" or "frequency" distributions. We discussed how a distribution might arise and why it would be of interest to us. And we mentioned the idea of percentile and probability distributions and why we would wish to use one of them rather than a frequency/count distribution. [Chapter 2]
(2) We talked about three major properties of distributions: (a) Central Tendency or Clustering, (b) Dispersion, and (c) Skewness and we illustrated what these properties meant. [Chapter 4]
(3) We went over "summation notation" and how it works. We realized that summation notation is just a short hand way to tell us to do a particular set of mathematical operations. And we were reassured that this was about as hard as the mathematics was going to get. [Chapter 4]
(4) We talked about measures of clustering/central tendency and then defined the following properties of a variable/distribution: (a) Median and (b) Mean. We also defined the Mode and the Range of a distribution. [Chapter 4]
(5) Using SPSS, we illustrated how sampling variation can make a difference in how we interpret our results and discussed how this might impact the way we go about deciding how to do our sampling for our research projects. [Chapter 1]
(6) We illustrated how to use some of the basics of SPSS. In particular, we examined how to use some of the elements in the File, Edit, Graphics and Analysis elements.
(7) In the File element, we examined: (a) New and the sub-option data, (b) Open and the sub-option data, (c) Save and Save As, (d) Recently Used Data and Files.
(8) In the Edit element, we examined Copy and Paste.
(9) In the Graphs element, we reviewed a number of items: (a) Gallery - which provides information on all of the different options available for graphing data and provides help as well, (b) we used the Bar Graph, Line Graph, Pie Chart and Histogram to illustrate our data. We talked about why one would use one choice over the other and some of the "lies" of illustrating data incorrectly. [Chapters 2, 3]
(10) In the Analysis element, we reviewed how to use the Descriptive Statistics component. And, we examined the frequencies and descriptives sub-options within that component. [Chapters 2, 4]
With this lecture, Chapters 1-4 of the textbook should be beginning to coalesce into a more sensible state for you. We are currently off by one lecture. So please re-read the material in Chapters 1-4 of the book. If you wish to get ahead, read Chapter 5. We will be focusing, next time, on the remainder of Chapter 4 and the beginning of Chapter 5.
Have a great week
Tarynn