Im quite confuse if I should use a weighted or unweighted survey data when doing categorical data analysis such as Chi-square, G2, concordant or discordant analysis, etc.
Basically, these analyses use the numbers in a cross tab table. My take is to use weighted data because its assumed its a better approximate of the population value. However, using the weighted (and expanded) data may influence the p-value making most of the results significant.
Any idea is greatly appreciated. Thank you.