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Summarizing and Visualizing Data

Reading Trends with Time-Series Graphs

Description

A time-series graph shows repeated measurements taken at successive intervals of time. It is also called a time series chart. This type of line graph helps organize data that changes over time.

To build a time-series graph, use both parts of a paired data set. Plot the time increments on the hori...

Transcript

在不同时间点收集的定量数据  称为时间序列数据。  

例如,考虑水被加热时温度的升高。此类包含时间因素的数据集可以使用时间序列图进行可视化。

首先,定期测量水的温度,并将数据记录在表格中。然后,绘制一幅以时间为横轴(X轴)、温度为纵轴(Y轴)的图表。 

然后,在每个时间间隔标记测得的温度,并用一条连续的线连接所有这些数据点。通过该图表可以得出结论:将水加热至 100 摄氏度需要 15 分钟。 

时间序列图的其他示例包括公司股票价格、脉搏率以及天气预报。

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