# What is a history graph?

Historical graphs capture the evolution of graphs through time. A historical graph can be modeled as a sequence of graph snapshots, where each snapshot corresponds to the state of the graph at the corresponding time instant.

## What is a line graph in math?

A line graph is a type of chart used to show information that changes over time. We plot line graphs using several points connected by straight lines. We also call it a line chart. The line graph comprises of two axes known as ‘x’ axis and ‘y’ axis. The horizontal axis is known as the x-axis.

## How is wave speed calculated?

Wave speed is the speed at which a wave travels. Wave speed is related to wavelength, frequency, and period by the equation wave speed = frequency x wavelength.

## What is period of a wave?

Wave Period: The time it takes for two successive crests (one wavelength) to pass a specified point. The wave period is often referenced in seconds, e.g. one wave every 6 seconds.

## Is a circular statistical graphic which is divided into slices to illustrate numerical proportion?

A pie chart (or a circle chart) is a circular statistical graphic, which is divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice (and consequently its central angle and area), is proportional to the quantity it represents.

## What are the three main graphs?

Three commonly used types of graphs are bar graphs, circle graphs, and line graphs.

## How do you read a graph?

Graphs have two axes, the lines that run across the bottom and up the side. The line along the bottom is called the horizontal or x-axis, and the line up the side is called the vertical or y-axis. The x-axis may contain categories or numbers. You read it from the bottom left of the graph.

## Is wavelength a unit?

Units of Wavelength The SI unit of wavelength is meter because the wavelength is a measure of distance. As a measure of speed and distance, one meter is defined as the distance covered by light travelling in a vacuum in a duration of 1/ (3 x 10 8 ) seconds.

## How do you find the velocity of a string?

Velocity of wave in a string is given by v=μT , where T is lension and μ is mass per unit length (m/ℓ).

## What type of wave is a sound wave?

Longitudinal waves A longitudinal wave is one where all the particles of the medium (such as gas, liquid or solid) vibrate in the same direction as the wave. Sound waves are longitudinal waves. When longitudinal waves travel through any given medium, they also include compressions and rarefactions.

## What is the unit of frequency?

The SI unit for frequency is the hertz (Hz). One hertz is the same as one cycle per second.

## What is complete wave cycle?

3- One complete wave cycle is referred to as a Wavelength . 4- Wave motion that is Perpendicular to wave direction describes a Transverse wave.

## What is a unit period?

A time period (denoted by ‘T” ) is the time taken for one complete cycle of vibration to pass a given point. As the frequency of a wave increases, the time period of the wave decreases. The unit for time period is ‘seconds’.

## Which types of graphs are used to show changes over time?

Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs.

## What is meant by pie diagram explain the method of its construction class 11?

Answer: In a pie chart, the various observations or components are represented by the sectors of a circle and the whole circle represents the sum of the value of all the components . Clearly, the total angle of 360° at the center of the circle is divided according to the values of the components .

## What type of graph that uses a circle to represent data?

A pie chart, sometimes called a circle chart, is a way of summarizing a set of nominal data or displaying the different values of a given variable (e.g. percentage distribution). This type of chart is a circle divided into a series of segments.

## What are graphs used for?

Graphs are a common method to visually illustrate relationships in the data. The purpose of a graph is to present data that are too numerous or complicated to be described adequately in the text and in less space.

## How do you name a graph?

To properly label a graph, you should identify which variable the x-axis and y-axis each represent. Don’t forget to include units of measure (called scale) so readers can understand each quantity represented by those axes. Finally, add a title to the graph, usually in the form “y-axis variable vs. x-axis variable.”

## Why do we use graphs?

Graphs and charts are effective visual tools because they present information quickly and easily. It is not surprising then, that graphs are commonly used by print and electronic media. Sometimes, data can be better understood when presented by a graph than by a table because the graph can reveal a trend or comparison.

## What are examples of graphs?

Popular graph types include line graphs, bar graphs, pie charts, scatter plots and histograms. Graphs are a great way to visualize data and display statistics. For example, a bar graph or chart is used to display numerical data that is independent of one another.

## What is a graph analysis?

Graph Algorithms or Graph Analytics are analytic tools used to determine strength and direction of relationships between objects in a graph. The focus of graph analytics is on pairwise relationship between two objects at a time and structural characteristics of the graph as a whole.

## What are the 6 types of graphs?

• Bar Chart/Graph.
• Pie Chart.
• Line Graph or Chart.
• Histogram Chart.
• Area Chart.
• Dot Graph or Plot.
• Scatter Plot.
• Bubble Chart.