# 1. Classify the scale of the following variables (i.e., nominal ,…

Question 1. Classify the scale of the following variables (i.e., nominal ,… 1.  Classify the scale of the following variables (i.e., nominal, ordinal, interval or ratio). Also, indicate if the interval or ratio variables are discrete or continuous.Number of past road accidentsHistory of past road accidentsHeartbeats per minuteTime is taken to complete a raceRaceABO blood typeInjury severity score that takes values from 1 to 5, with 1 being “very minor”, 2 “minor”, 3 “moderate”, 4 “serious”, 5 “very serious”. 2. In a rural city in country “A”, the incidence rate of a disease is seven times greater in women than in men, but the prevalence rates show no sex differences. What can be inferred from the incidence rate and the prevalence rates in this scenario? Explain in 3 to 4 sentences. 3. For sequences X, Y, and Z calculate the following:   2 ? [? Xi Yi  Zi2]                                      X {1, -2, 4, -2, 0, 1}                                      Y {0.25, -0.5, 8, 2, 2, 5}                                      Z {2, 3, 6, 3, 1, 1}4. A study was conducted on a sample randomly selected from city A. The results are presented in the table. Based on the information in the table answer the below questions:Age groupsNumber of participantsProportion of femaleRelative frequency of participants15 years or younger100.4 16-25 years250.6 26-30 years101.0 31 years or older21.0  Are the age groups mutually exclusive?Based on the number of participants, can you argue for or against this sample is representative of the age groups in city A?How many males and females were included in the study?Calculate the relative frequencies in the first right column.The information displayed in the above table relates to which statistical paradigm: descriptive or inferential? Explain your answer. Math Statistics and Probability PUBLIC HEA BIOSTATIST Share QuestionEmailCopy link Comments (0)