Google Sheets - Scatter chart

Scatter chart is used to show the relationship between two variables such as height vs weight of students, or ice cream sale vs temperature. Suppose a school nurse measures height and weight of some girl students and have the following result.


 1. Select the height and weight. Notice that we do not need the student names. Click Insert > Charts.


 2. A scatter chart pops up automatically.
 3. If you activate the chart (by clicking on the chart and the chart border will turn into blue), it becomes an interactive chart. If you move mouse cursor over a dot, it will tell you the height and weight of a student, like the following figure.


4. It seems student height and weight are positively related from the scatter chart. We can add a trend line to display the relationship. Right click the chart, under Series, select Weight (kg), then check the Trendline box. 




5. Now we have a trend line which goes upward. It indicates that when student height increases, weight also increases in general.


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