Brief outline of research questions and hypotheses How collated data was analyzed and where it originated from Structure of the dissertation Click the link to read further information about a dissertation introduction Literature Review The main purpose of the literature review is to demonstrate that you have painstakingly explored and understand where your dissertation or thesis fits into the research field you have undertaken, have you identified existing theory and how does this relate to your research? You should be able to demonstrate the ability to identify key scholars and theories applicable to your research dissertation and how you have applied, assessed and critiqued this research. To do this you need to; Define the current state of research in your chosen subject area Assess whether there are any closely related areas that you also need to refer to in your research dissertation Identify any gaps in literature where you argue that further research needs to be explored and added Explain how you plan to address research gaps This can lead to a clear statement of the research questions or hypotheses that you will be addressing.

The mean is the preferred statistic for calculating the center of your data set. But when outliers emerge, the median is an alternative statistic that is not affected by these unrepresentative scores.

If you are in a hurry and want to get a ballpark feeling for the average, the mode will work with a quick glance at the frequency distribution table. The Mean x bar The mean represents a whole data set of scores with one single number!

To obtain this statistic you add up all of the scores x and divide by the total number of scores in your distribution. Since it is an average, you probably have been calculating a mean often in your every day life.

Sometimes ordinal is used, too.

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This may occur with rating scales, performance scales or satisfaction scales where averages are useful. Certainly, no mean can be calculated with nominal scaled variables. This is another plus for this statistic. So the mean has become the Queen of Central Tendency.

But this royal designation should be avoided if your data set possesses outliers. An outlier is an extremely high or low score in your distribution. What happens is that outliers cause the mean to shift in the direction of the outlier You can tell if you have outliers in your data set by setting up a frequency distribution and then graphing a frequency polygon.

What should you do? Examine your data through the grunt work of developing a frequency distribution, and then use more than one measure of central tendency. One of the best, when your data has outliers, is the statistic called the median.

It is simply the midpoint in your distribution of ranked, ordered scores. To calculate the median, list all of the values in your distribution from the lowest to the highest and then find the midpoint — the place where it divides your distribution into equal halves.

That is, fifty percent of all scores is above and fifty percent is below. The Median - odd number of scores in your distribution If there is an odd number of scores in your distribution, the median is easy to identify.

Find the midpoint in the range of high to low scores. That midpoint is the median, since half of the scores are above it and half are below it. A formula can be used to locate the position in an ordered set of data. The median would be the sixth score in the set of data where the scores are listed in order from lowest to highest.

The Median - even number of scores in your distribution If you have an even number of scores, find the two that make the centermost point, and then average them. If you have an even number of scores, the median may or may not be an actual score, depending on what the two midpoints are.

If the midpoints are identical scores, then this is the median. If they need to be averaged, then the median will be an average and not an actual score in your distribution.

That is why we say the median is the midpoint, a point not a score. The mode as a statistic does not need to be calculated. If you look at your frequency distribution, a simple eyeball inspection of your data can tell you which score occurred most often.Hire a highly qualified essay writer to cater for all your content needs.

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Ordinal Logistic Regression | Real Statistics Using Excel