1. The first step is to open a Google Sheet with a chart you'd like to link to a Google Doc.

Highlight the table you want to copy.

2. Right click on the highlighted cells.

3. Click Copy

4. Right Click in the area of the document where you want to insert the chart.

5. Click Paste

6. Click Link to spreadsheet

7. Click Paste

8. Click Linked table options

9. Click Open source. 

10. This will open the original sheet.

Interactive tutorial