1) for a survey choose a target population (for example, the students of a given university ) with example on the type of survey it would be appropriate for (e.g. for understanding the problems of students during the Covid-19 pandemic).

2) which official statistics method could be used and what is the number of the target population? (e.g. in 2020, there were 14 006 students in a given university).

3) Choose the value of the margin of error and the value of dispersion and calculate the sample size with the probability of 0.95 (t = 1.96).

explanations, the source of the data and all the calculations will be much apprecited