disregard my choice for a, I accidentally click on it and I don't know if it's even right. as for the first part the drop down says, "nominal, ratio, interval, or ordinal". for the measurements

Test: Final Exam identify the level of measurement of the data, and explain what ls wrong with the given calculation. in a set of data. course grades are represented as 100 for 'A'. 200 for 'B'. and 300 for 'C'. The average (mean) of the 518 course grades is 231.2. ---E)"' The data are at the E level of measurement. What is wrong with the given calculation? k G) A. One must use a different method to compute the average (mean) of such data. 0 B. Such data should not be used for calculations such as an average (mean). 0 C. The true average (mean) ls 195.4. 0 D. There is nothing wrong with the given calculation