NPS daily survey data

by juan alvarez   Last Updated September 20, 2018 23:19 PM

I have daily surveys sent to users of several of my organization┬┤s services, the surveys consists only on NPS question (How likely would recommend X? on a 0 to 10 scale), number of respondents vary by day and service.

I would like to get the NPS score and confidence interval for a service on a monthly scale. Is it ok to joust aggregate the data points and calculate CI as in a cross-sectional survey?

After calculating monthly NPS I would like to compare scores from different services. Wold this be a valid approach?

Supposing the number of respondents is equal or grater than the number of respondents required in a cross-sectional approach. Is this a valid way to obtain a representative sample of the users of such services over a month?

Finally I would like to compare the NPS of a service before and after some significant project is made to improve the service. Projects usually take a few months to implement and have a marked go-live date. Wold comparing the NPS of months after the improvement to the NPS before the improvement be valid?

Thanks for your advice.

Related Questions

Using zoo for irregular time series in survey datasets

Updated November 18, 2018 11:19 AM

Time-Series Cross-Section or Multi Level

Updated May 14, 2016 08:08 AM

Logitudinal Study with variable sampling periods

Updated January 12, 2019 16:19 PM