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## What is the curved line of a circle called?

In Euclidean geometry, an arc (symbol: ⌒) is a connected subset of a differentiable curve. A common curved example is an arc of a circle, called a circular arc. In a sphere (or a spheroid), an arc of a great circle (or a great ellipse) is called a great arc.

## Is a line of best fit curved or straight?

In mathematics, a line (and thus a line of best fit) is, by definition, straight.

## What is the shape of curved?

A curve is a shape or a line which is smoothly drawn in a plane having a bent or turns in it. For example, a circle is an example of curved-shape. Plane or Two Dimensional Geometry. Solid or Three Dimensional Geometry.

## Is circle a closed curve?

Triangle, quadrilateral, circle, etc., are examples of closed curves. A curve which starts and ends at the same point without crossing itself is called a simple closed curve. A circle is a simple closed curve.

## What does a closed curve look like?

A curve that joins up so there are no end points. Example: an ellipse is a closed curve. So is a circle. You get a closed curve when you draw it without lifting your pencil and you end up where you started.

## What is a closed curve?

A closed curve is a curve where the beginning and end points are the same.

## What is frequency curve and ogive?

First we prepare the cumulative frequency table, then the cumulative frequencies are plotted against the upper or lower limits of the corresponding class intervals. By joining the points the curve so obtained is called a cumulative frequency curve or ogive.

## How do you draw a frequency polygon curve?

Steps to Draw a Frequency Polygon

1. Mark all the class marks on the horizontal axis. It is also known as the mid-value of every class.
2. Corresponding to each class mark, plot the frequency as given to you.
3. Join all the plotted points using a line segment.
4. This resulting curve is called the frequency polygon.

## What is the difference between histogram and frequency polygon?

Whereas a histogram is built of bins with a width representing the interval, and a height representing the quantity of data points in each interval, a frequency polygon is constructed by drawing a point to represent the frequency of a particular interval and connecting that point to the one representing the frequency …

## Is a frequency polygon a line graph?

A frequency polygon is a line graph of class frequency plotted against class midpoint.

## What is class interval?

Class interval refers to the numerical width of any class in a particular distribution. Class interval = upper-class limit – lower class limit. In statistics, the data is arranged into different classes and the width of such classes is called a class interval.

## What is class interval example?

The frequency of a class interval is the number of observations that occur in a particular predefined interval. So, for example, if 20 people aged 5 to 9 appear in our study’s data, the frequency for the 5–9 interval is 20. The endpoints of a class interval are the lowest and highest values that a variable can take.

2021-04-21