What is Frequency Distribution

What is Frequency DistributionSimple examples tend to be test scores and election returns. A frequency distribution could be graphed like pie chart or a histogram.

For big data sets, the stepped graph of a histogram is usually approximated by the smooth curve of a distribution function (known as a density function when normalized to ensure that the area under the curve is 1). The famed bell curve or normal distribution is actually the graph of one such function. Frequency distributions are particularly helpful in summarizing huge data sets and assigning probabilities.

Example of Frequency Distribution

A frequency distribution is probably the most common graphical tools employed to explain a single population. It is a tabulation from the frequencies of every value (or range of values). You can find a wide variety of methods to show frequency distributions, such as relative frequency histograms, histograms, cumulative frequency distributions and density histograms. Histograms show the frequency of components that take place within a certain array of values, while cumulative distributions show the frequency of elements that take place below a certain value.

Here are some examples of frequency distribution:

Construct a frequency, relative frequency and density histogram of net heat flux data at 130° E, 20° N for January 1960 to March 1998.

Mean of Frequency Distribution

Mean of frequency distribution: A frequency distribution is any set up of data that exhibits the frequency of occurrence of various values of the variable or the frequency of occurrence of values dropping within arbitrarily described ranges of the variable known as class intervals.

Rules of thumb for organizing a set of data into class intervals:

1. Pick a class interval of such a size that between 10 and 20 such intervals will cover the whole range of the observations.

2. Choose class intervals with a range of 3,5,10 or 20 points.

3. Choosing class interval at a value that is multiple of the size of that interval.

4. Set up the class intervals in order of magnitude of values they contain with the class of biggest values on top.  

Latest Articles

Interesting Facts about Platinum

Scientists analyzed samples of the metal following European exploration of the region started. Platinum has been used by ancient people in Central and South America.

Cool Facts about Gold

Not many chemicals can attack gold, so that’s why it maintains it shine even when buried for 1000’s of years. When compared with other metals, gold is much softer. One can beat 1 gram of gold to a 1 square meter sheet and light would shine via that sheet.

Interesting Facts about Wind Energy

One wind turbine can power as much as 500 homes. Wind mills date all the way back to the year 2000 BC where they were utilized in China.

Interesting Facts about Fruit

Fruit is beautiful, tasty and great for all us. Fruit is also interesting. Listed here is a brief collection of interesting facts about fruit.

Facts about the Rock Cycle

Liquid rock which cools quickly after exposure to the Earth’s atmosphere are fine-grained and known as extrusive. Obsidian is an example of this kind of rock.