I want to create a table like this, have no clue, need help

I just made this in rush in paint just to show you what I mean (see below). I don’t know statistics and have not worked with excel so it’s all new to me. I tried to teach myself and did not understand. I tried to follow this youtube video link text but that did not help me.

Thank you for your help.

The image did not come through correctly. I upvoted to give you enough points so that now you can attach it properly. So please edit the question and try again.

This kind of table can be created on Writer or Calc. You have to merge cells, this is your wand. (LO 6.0.2.1)

See attached samples.

Is this what you would like? I could not detect any connection between your question and and your linked Youtube video about creating a data base!?

TableWriter.odt - TableCalc.ods