The four levels of measurement that are commonly used for classifying data are ratio, - and A) interval; normal; ordinary B) normal; ordinal; interval C) nominal; ordinal; interval D) nominal; ordinal; categorical Answer The following data show the number of laps run by each participant in a marathon. 46 65 55 43 51 48 57 30 43 49 32 56 Which of these choices display the correct stemplot? A) B) 3 02 3 02 4 33689 4 3689 5 1567 4 135 67 6 5 Answer: "If the standard deviation for a set of data is 0, which of the following must be true? A) All the data values equal 0. B) All of the data values are negative. C) All of the data values are identical. D) None of the above must be true since standard deviation cannot be equal to O. Answer: 1 Refer to the table which summarizes the results of testing for a certain disease. Positive Test Negative Test Result Result Subject has the disease 111