Identify the level of measurement of the data, and explain what is wrong with the given calculation. In a survey, the responses of respondents are identified as 1 for a "yes" comma 2 for a "no" comma 3 for a "maybe" comma and 4 for anything else. The average (mean) is calculated for 791 respondents and the result is 1.5 . The data are at the ▼ nominal ratio ordinal interval level of measurement. What is wrong with the given calculation?