The calculation methods of the "captain of the ship"

Participants: the study involved older preschool children in the number of 20 people. The average age of children is 5.8 years. 2 tables, 3 figures, full description of the results. Contains an excell file with calculations. If desired, the number of children can be increased or reduced by calculating by analogy. It can be easily inserted into a term paper or thesis. Calculation example: https://www.youtube.com/watch?v=ogcdoDeLXTQ&t=5s