Cursor Jumps while Typing using Keyboard in Ubuntu 16.04 Dell Laptop.

Solution: 
Firstly decrease the speed of mouse pointer, between slow to average.

After that analyzed the Issue and the outcome is as follows: 

Looks like the following link helped. The issue is when we type the cursor jumps where the mouse pointer is.

This means the Issue the when we are typing, our touch pad (for mouse pointer) should be disabled.

The links which helped me are : 

https://askubuntu.com/questions/462135/touchpad-issue-jumping-cursor-while-typing-ubuntu-14-04-syndaemon-dont-help

Open the terminal and type the command: 

syndaemon -i 0.5 -d

This worked for me, my machine is Ubuntu 16.04 LTS.

If above doesn't works out then we might need to install the touchpad gui widget(touch pad indicator) and disable touchpad while typing. 

This can be found in the URL:http://ubuntuhandbook.org/index.php/2016/11/install-touchpad-indicator-in-ubuntu-16-04/