What is the frequency table?

Frequency table is an organized number of items or values. The frequency table in its simplest form shows how often each particular value occurs in the data set. The unprocessed data is arranged in classes and calculated to show how much of each class exists in raw data. These tables are often useful for discovering basic statistical information about a set of data.

If there are only a few values ​​in the data set in the raw file, usually a simple frequency table is needed. Some data files are too large or unorganized to work manually, and a calculator or computer can be needed. In general, simple frequency tables consist of three columns used to monitor categories known as Mark, Tally and frequencies. For example, if someone turned a coin 30 times, they would have 30 values ​​in the data set, but only two classes - heads and tails. On the other hand, if three people gotidezert from a store with 25 different flavors of ice cream bY in the data file were three values ​​and 25 possible classes.

For larger data files, the process of creating a frequency table usually requires that raw data be organized into groups or scope, called class intervals . This can be useful in solving numbers. For example, if the lowest data set number is one and the highest number is 300, the brand column can be divided into six class intervals, starting with One-50, 51-100, 101-150, etc.

Furthermore, organized data are usually calculated to determine how many times each class occurs in the data file. In the simple frequency table, this is usually done manually by marking the sum of the sum, next to the class line, once for each value or counting. In a more complicated data file, unprocessed data are often entered into a computer or calculator located by hand included.

The third column in the frequency table is the frequency column. Here is listedand frequency of occurrence for each class. The numbers in this column are not RAW data values, but rather the number of times each class has occurred in the data set. This column is often made of a graph or cake graph that shows values ​​in a more interesting way.

Frequency tables

may be useful for revealing some basic statistical data on the raw data set. They can show any modes or values ​​that occur most often in data. These tables can also be useful for localization of mean value or mean value, as data is often organized in the mark in the mark column.

The frequency table can also be used to determine the data distribution. For this reason, the frequency distribution tables are often called. The table can also show whether the data has a central tendency that can be visually represented by higher frequency -wide -group in the middle of the table. It can also display data scattering in all classes, which is also called its variability.