Identify the level of measurement of the data, and explain what is wrong with the given calculation. in a survey, the political parties of respondents are identified as 100 for a democrat comma 200 for a republican comma 300 for a libertarian comma and 400 for anything else. the average (mean) is calculated for 708 respondents and the result is 256.1 . the data are at the nominal ordinal ratio nominal interval level of measurement. what is wrong with the given calculation?