Mathematics for IGCSE & O level - Categorical, Numerical And Grouped Data (Section 6 - No. 29)
What should you do with the questions if the survey is a pilot survey?
Do not do any changes.
Change some or all of your questions.
Have to calculate the average of the questions.
Have to leave the survey.
คำอธิบาย
You might want to review and/or change your questions