estionnaire
The questionnaire survey method is a method for researchers to collect data, solicit opinions or understand the situation from the target group through questionnaires(Mathirajan,2006). The self-administered questionnaire has the characteristics of standardized access.

In this study, the questionnaire will be sent to the trainees. The question revolves around whether they feel that their abilities have improved after being trained. In what ways has it been improved and what has remained unchanged.
In this study, questionnaires will be sent to trainees. The questionnaire questions will revolve around whether they feel their abilities have improved after training. Where it has improved and where it has not changed.

When designing the questionnaire, take into account the time spent by the interviewees, and the questions should not be too many. During the questionnaire survey, try to increase the number of participants to avoid bias in their opinions. Don’t deal with too sensitive issues so as not to harm the participants’ self-esteem (Menezes, 2012).

Why to choose
Questionnaire is a survey suitable for this study. First of all, as the time for investigation and analysis is very limited, for trainees, more accurate ideas of trainees is required, so the number of trainees should be as high as possible. Compared with other survey methods, questionnaires can get more answers in a certain period of time. Secondly, in general, trainees’ information is relatively private, so it may be difficult for ordinary people to have access to them for face-to-face interviews. Therefore, the questionnaire is filled in anonymously and the results are strictly confidential, which can ensure that the privacy of trainees in the training company is not violated. Finally, the questionnaire is used to make the final results easy to be quantified, and the results are easier to be statistically processed and analysed, which saves time for this research. (Mathirajan,2006).