WHAT IT IS Frequency distributions summarize and compress data by grouping it into classes and recording how many data points fall into each class. That is, they show how many observations on a given variable have a particular attribute. For example, a survey is taken of 50 people's favorite color. The frequency distribution might indicate 15 people selected green, 12 blue, 6 red, 7 yellow, and 10 purple. Converting these raw numbers into percentages would then provide an even more useful description of the data. The frequency distribution is the foundation of descriptive statistics. It is a prerequisite for both the various graphs used to display data and the basic statistics used to describe a data set  mean, median, mode, variance, standard deviation, and so forth. Note that frequency distributions are generally used to describe both nominal and interval data, though they can describe ordinal data.
WHEN TO USE IT A frequency distribution should be constructed for virtually all data sets. They are especially useful whenever a broad, easily understood description of data concentration and spread is needed. Most data provided by third parties are grouped into a frequency distribution.
Preparation The steps in preparing frequency distributions manually are as follows: C Collect raw data from entity records, interviews, surveys, etc. C If data are nominal, list the classes into which a data point might fall. If data are interval, select an appropriate number of data classes. C Calculate the absolute frequency of each class, i.e. the raw number of data points in each class. Note that the sum of all absolute frequencies must equal the sample size. C Calculate the relative frequency by dividing the absolute frequency by the sample size. This reveals the proportion or percent of data points in each class. Note that the sum of all relative frequencies must be 1. C Calculate the cumulative frequency for each class by adding the number or...
...I found the concept on frequencydistribution using Google and the search words “frequencydistribution” at http://www.mathsisfun.com/data/frequencydistribution.html
This website is geared towards younger people and therefore breaks down frequencydistribution into very basic terms: values and their frequency (how often each value occurs). The website uses the example of a child’s...
...Star MP3. To summarize the consumer responses with a frequency table, how many classes would the frequency table have?
4. Two thousand frequent Midwestern business travelers are asked which Midwest city they prefer: Indianapolis, Saint Louis, Chicago, or Milwaukee. The results were 100 liked Indianapolis best, 450 liked Saint Louis, 1,300 liked Chicago, and the remainder preferred Milwaukee . Develop a frequency table and a relative...
...SPSS: Grouped FrequencyDistribution
FIRST STEP: Under the Transform menu, choose Visual Binning… This
command assists you in creating a new variable that groups the data. You
will then use the new variable to create a grouped frequencydistribution.
• From the Variables list box, click on wt (weight) and then on the arrow to
move it to the Variable to Band list box. Click Continue.
• Select wt in the left box. Near the top...
...FREQUENCY POLYGONS
W H AT I S A F R E Q U E N C Y P O LY G O N
Frequency polygons are a graphical device for
understanding the shapes of distributions. They
serve the same purpose as histograms, but are
especially helpful for comparing sets of data.
Frequency polygons are also a good choice for
displaying cumulative frequencydistributions.
H O W T O C R E AT E A F R E Q U E N C Y
P O LY G O N
To create...
...Milwaukee. Develop a frequency table and a relative frequency table to summarize this information. (Round relative frequency to 3 decimal places.) 
City  Frequency  Relative Frequency 
Indianapolis  120  0.060 
St. Louis  430  0.215 
Chicago  1,360  0.680 
Milwaukee  90  0.045 

(a)  What is this chart called? 
 
...
...examination. The distribution of marks is shown in the following grouped frequency table.
Marks1–1011–2021–3031–4041–5051–6061–7071–8081–9091–100
Number of candidates155010017026022090453020
(a) Copy and complete the following table, which presents the above data as a cumulative frequencydistribution.
(3)
Mark£10£20£30£40£50£60£70£80£90£100
Number of candidates1565905
(b) Draw a...
...INDICATOR
TO COMPARE INDICATORS
TO DEMONSTRATE CORRELATIONS
TO ILLUSTRATE TRENDS
INFOGRAPHICS USING EXCEL
Frequency Tables and Histograms Charts : create and format charts Conditional Formatting Sparklines Excel Graphics
FREQUENCYDISTRIBUTION
Shows how many observations fall in various categories(bins) Can be represented in a Frequency Table To obtain a Frequency Table for any given data, we must...
...Letter frequency
From Wikipedia, the free encyclopedia
The most common letter in the English alphabet is E. The frequency of letters in text has often been studied for use in cryptography, and frequency analysis in particular. No exact letter frequencydistribution underlies a given language, since all writers write slightly differently. Linotype machines assumed the letter order, from most to least common, to be etaoin...