3. The data in Table 3.1 are from an investigation of an outbreak of severe abdominal pain, persistent vomiting, and generalized weakness among residents of a rural village. The cause of the outbreak was eventually identified as flour unintentionally contaminated with lead dust. Table 3.1 Age and Blood Lead Levels (BLLS) of Ill Villagers and Family Members - Country X, 1996 Age (Years) BLL' Age (Years) ID Log1,BLL ID BLL Log1,BLL 1.84 2.01 1.66 1.89 1.70 1.81 1.83 1.90 1.76 1.93 1.88 1.76 ? 1.41 2.02 1.59 1.54 1.86 1.76 1.58 1.64 3 4 69 45 49 84 48 58 17 76 61 78 48 57 68 22 23 24 25 26 27 33 33 35 35 103 46 78 1 2 3 1.66 1.69 1.92 7 9 10 11 12 13 14 15 15 16 16 1.68 1.77 1.23 1.88 1.79 1.89 1.68 1.76 1.83 ? 1.42 1.89 1.75 36 38 67 79 7 8 28 29 30 31 32 33 34 35 36 37 38 39 40 41 45 47 49 56 60 65 65 86 76 58 10 11 12 13 14 15 16 17 18 19 20 21 26 104 39 35 72 57 38 44 26 78 56 54 73 17 19 19 20 22 26 27 1.73 1.86 1.87 1.80 74 63 78 1 Blood lead levels measured in micrograms per deciliter (mcg/dl) ? Missing value Data Source: Nasser A, Hatch D, Pertowski C, Yoon S. Outbreak investigation of an unknown illness in a rural village, Egvpt (case study). Cairo: Field Epidemiology Training Program, 1999. 1. Summarize the blood level data with a frequency distribution. 2. Calculate the arithmetic mean. 3. Identify the median and interquartile range. 4. Calculate the standard deviation. 5. Select and draw the most appropriate method (graph/chart) in presenting this data. Explain why you selected that type of method.

2.1     The Australian Bureau of Statistics (ABS) has recently released a report on the relationship between international students’ ethnicity and enrolments in higher education.           Identify the dependent variable(s) and the independent variable (s) in the above scenario.

In Table L-1, the total value of imports of Indonesian goods and services from China for the 2010-2019 period is reported on a quarterly basis. With this data you are asked to analyze it with the Trend model and Seasonal Index. Question: a. Calculate a moving average with the average period length of 4 or MA (4) [why four?] And put the results in a column. Beware of selecting the rows to place the average result. b. Calculate the moving average with the length of the average period is 2 from the data in column MA (4) and the result is given the symbol MA (2x4) and the result is placed in a column. Beware of selecting the rows to place the average result. c. Calculate the ratio to the Moving Average (Y / MA (2x4)) and place it in a new column! d. Calculate a seasonal index and interpret the results! e. Create a Deseasonalized data series and place it in a new column! f. Plot the Dessasonalized data series and read the long-term movement patterns of data! Remember that understanding of…

Section 2.1, question 9