Purpose. An annotated bibliography describes the field of research on a topic and should include sources that reflect the range of approaches to the subject. The annotations tend to do one or both of two things: Description: a descriptive annotation provides a brief overview of the text.
In statistics, a frequency distribution is a table that displays the frequency of various outcomes in a sample. Each entry in the table contains the frequency or count of the occurrences of values within a particular group or interval, and in this way, the table summarizes the distribution of values in the sample.he kurtosis of a frequency distribution is the concentration of scores at the mean, or how peaked the distribution appears if depicted graphicallyâfor example, in a histogram. If the distribution is more peaked than the normal distribution it is said to be leptokurtic; if less peaked it is said to be platykurtic.
Relative cumulative frequency can be found by dividing the frequency of each interval by the total number of observations. (For more information, see Frequency distribution in the chapter entitled Organizing data.). A frequency distribution table can also be used to calculate cumulative percentage.se the Frequency column to calculate cumulative frequency. 1  First, add the number from the Frequency column to its predecessor. 2  For example, in Stem 0, we have only one observation and no predecessors. 3  The cumulative frequency is one. 4  1 + 0 = 1. 5  However in Stem 1, there are two observations.