## What are ogives in statistics?

Ogives are graphs that are used to estimate how many numbers lie below or above a particular variable or value in data. The most commonly used graphs of the frequency distribution are histogram, frequency polygon, frequency curve, Ogives (cumulative frequency curves).

**Why ogives are mostly used in statistics?**

An ogive graph is a plot used in statistics to show cumulative frequencies. It allows us to quickly estimate the number of observations that are less than or equal to a particular value. Let’s consider an example, and construct both a frequency and ogive plot to see the difference.

### What is frequency curve and ogive?

An ogive (oh-jive), sometimes called a cumulative frequency polygon, is a type of frequency polygon that shows cumulative frequencies. In other words, the cumulative percents are added on the graph from left to right. An ogive graph plots cumulative frequency on the y-axis and class boundaries along the x-axis.

**What are the types of ogives?**

There are two types of ogives : Less than ogive : Plot the points with the upper limits of the class as abscissae and the corresponding less than cumulative frequencies as ordinates. The points are joined by free hand smooth curve to give less than cumulative frequency curve or the less than Ogive.

## What is the sum of all relative frequencies?

1

The sum of relative frequencies in a distribution always equals 1.

**How do you find the mean of an ogive?**

To find the median on ogive, follow these steps:

- Plot the points on the graph and join them with lines.
- Find the value of N/2.
- Mark this value in the Cumulative frequency scale (y axis).
- Join this value to the line formed by plotting the points with dotted line .

### Where do you find the beginning of an ogive?

Plot the ogive The first coordinate in the plot always starts at a y -value of 0 because we always start from a count of zero. So, the first coordinate is at (10;0) — at the beginning of the first interval.

**How is the ogive graph used in statistics?**

An ogive graph (also known as a cumulative frequency graph) is a graph used in statistics to illustrate cumulative frequencies, which are measured by adding each frequency (the number of observations) to the sum of the frequencies preceding it in the dataset.

## How many scientific papers does Claudia Archetti have?

Claudia Archetti has carried out the scientific activity in collaboration with Italian and foreign colleagues and published joint papers with some of the best researchers at the international level. She is author of more than 60 papers in international journals. She was Area Editor of Computers and Operations Research.

**Which is the correct definition of the ogive curve?**

The Ogive is a graph of a cumulative distribution, which explains data values on the horizontal plane axis and either the cumulative relative frequencies, the cumulative frequencies or cumulative per cent frequencies on the vertical axis. Cumulative frequency is defined as the sum of all the previous frequencies up to the current point.

### Who is Archetti Claudia, assistant professor at University of Brescia?

She teaches Decision Analysis, Optimal Decision Making, Advanced Optimization and Math Refreshing in ESSEC MSc and PhD programs. Prior to joining ESSEC in 2019, she was appointed at the University of Brescia as Assistant Professor in 2005 and as Associate Professor in 2014.