Line Graph

"A line chart or line graph is a type of chart which displays information as a series of data points connected by straight line segments. It is a basic type of chart common in many fields. It is similar to a scatter plot except that the measurement points are ordered (typically by their x-axis value) and joined with straight line segments. A line chart is often used to visualize a trend in data over intervals of time – a time series – thus the line is often drawn chronologically." [Line chart. Wikipedia]
The templates example "Design elements - Line graphs" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Line Graphs solution from the Graphs and Charts area of ConceptDraw Solution Park.

Use this template to design your line graphs.
"A time series is a sequence of data points, measured typically at successive points in time spaced at uniform time intervals. ... Time series are very frequently plotted via line charts. Time series are used in statistics, signal processing, pattern recognition, econometrics, mathematical finance, weather forecasting, earthquake prediction, electroencephalography, control engineering, astronomy, and communications engineering. Time series analysis comprises methods for analyzing time series data in order to extract meaningful statistics and other characteristics of the data. Time series forecasting is the use of a model to predict future values based on previously observed values. While regression analysis is often employed in such a way as to test theories that the current values of one or more independent time series affect the current value of another time series, this type of analysis of time series is not called "time series analysis", which focuses on comparing values of time series at different points in time. Time series data have a natural temporal ordering." [Time series. Wikipedia]
The line graph template for the ConceptDraw PRO diagramming and vector drawing software is included in the Line Graphs solution from the Graphs and Charts area of ConceptDraw Solution Park.