QUESTION 4 Scenario. Concerns have been raised about the effectiveness of this season's flu vaccination after it was noticed that a high proportion of people with severe illness have been vaccinated. Data has been collected on the following attributes of the flu sufferers.

1. What percentage of vaccinated and unvaccinated people experience severe illness? [1 mark]

2. What is the average age of patients that are severely ill compared to patients with mild illness? [1 mark]

3. What is the average age of people that are vaccinated compared to people that are unvaccinated? [1 mark]

4. What proportion of people in the age category 41-60 are vaccinated? [1 mark]

5. Is there any age category where a higher proportion of vaccinated people are severely ill compared unvaccinated people? [1 mark]

ID Age Vacstatus Severity Age Cat 1 47 unvaccinated severe 41-60 2 65 vaccinated mild 61-80 3 86 vaccinated severe 80+ 4 20 unvaccinated mild 0-20 5 79 unvaccinated severe 61-80 6 93 vaccinated severe 80+ 7 18 unvaccinated severe 0-20 8 94 vaccinated severe 80+ 9 66 vaccinated mild 61-80 10 57 vaccinated severe 41-60 11 76 vaccinated Severe 61-80 12 71 vaccinated severe 61-80 13 91 vaccinated Severe 80+ 14 55 unvaccinated severe 41-60 15 52 unvaccinated severe 41-60 16 37 unvaccinated mild 21-40 17 82 vaccinated mild 80+ 18 26 unvaccinated mild 21-40 19 70 vaccinated Severe 61-80 20 73 vaccinated severe 61-80 21 27 unvaccinated mild 21-40 22 94 vaccinated severe 80+ 23 49 vaccinated severe 41-60 24 61 vaccinated mild 61-80 25 89 vaccinated severe 80+ 26 30 unvaccinated mild 21-40 27 44 unvaccinated mild 41-60 28 22 unvaccinated mild 21-40 29 40 unvaccinated mild 21-40 30 42 vaccinated mild 41-60 31 64 vaccinated mild 61-80 32 15 vaccinated mild 0-20 33 76 vaccinated severe 61-80 34 47 unvaccinated severe 41-60 35 54 unvaccinated severe 41-60 36 90 vaccinated severe 80+ 37 89 vaccinated severe 80+ 38 52 unvaccinated severe 41-60 39 92 vaccinated severe 80+ 40 91 vaccinated severe 80+ 41 22 unvaccinated mild 21-40 42 85 vaccinated severe 80+ 43 83 vaccinated severe 80+ 44 53 vaccinated mild 41-60 45 19 unvaccinated mild 0-20 46 26 unvaccinated severe 21-40 47 53 vaccinated severe 41-60 48 24 unvaccinated mild 21-40 49 42 vaccinated Severe 41-6050 65 vaccinated mild 61-80 51 25 unvaccinated mild 21-40 52 29 unvaccinated mild 21-40 53 27 unvaccinated mild 21-40 54 37 unvaccinated severe 21-40 55 58 vaccinated severe 41-60 56 39 unvaccinated severe 21-40 57 70 vaccinated mild 61-80 58 57 vaccinated mild 41-60 59 64 vaccinated severe 61-80 60 51 vaccinated mild 41-60 61 47 unvaccinated severe 41-60 62 23 vaccinated mild 21-40 63 86 vaccinated severe 80+ 64 92 vaccinated severe 80+ 65 74 vaccinated severe 61-80 66 94 vaccinated severe 80+ 67 69 vaccinated mild 61-80 68 16 unvaccinated mild 0-20 69 31 vaccinated mild 21-40 70 43 vaccinated severe 41-60 71 39 vaccinated mild 21-40 72 46 vaccinated mild 41-60 73 18 unvaccinated mild 0-20 74 86 vaccinated severe 80+ 75 71 vaccinated severe 61-80 76 88 vaccinated severe 80+ 77 46 unvaccinated severe 41-60 78 BB vaccinated severe 80+ 79 69 vaccinated severe 61-80 80 58 unvaccinated severe 41-60 81 56 unvaccinated severe 41-60 82 36 unvaccinated severe 21-40 83 E4 vaccinated severe 80+ 84 67 vaccinated mild 61-80 85 29 unvaccinated mild 21-40 86 95 vaccinated severe 80+ 87 8B unvaccinated severe 80+ 50 unvaccinated severe 41-60 89 33 unvaccinated mild 21-40 90 93 vaccinated severe 80+ 91 39 unvaccinated mild 21-40 92 64 vaccinated severe 61-80 E6 22 unvaccinated severe 21-40 94 56 vaccinated mild 41-60 95 84 vaccinated severe 80+ 96 24 unvaccinated mild 21-40 97 66 vaccinated Severe 61-80 98 54 vaccinated severe 41-60 99 44 unvaccinated mild 41-60100 87 vaccinated severe 80+ 101 44 vaccinated mild 41-60 102 84 vaccinated severe 80+ 103 43 unvaccinated severe 41-60 104 91 vaccinated severe 80+ 105 39 vaccinated mild 21-40 106 90 vaccinated severe 80+ 107 76 vaccinated mild 61-80 108 26 unvaccinated severe 21-40 109 32 unvaccinated severe 21-40 110 73 vaccinated severe 61-80 111 34 unvaccinated mild 21-40 112 68 vaccinated severe 61-80 113 31 unvaccinated severe 21-40 114 65 vaccinated severe 61-80 115 22 unvaccinated severe 21-40 116 29 unvaccinated severe 21-40 117 54 unvaccinated severe 41-60 118 52 vaccinated mild 41-60 119 37 unvaccinated mild 21-40 120 29 vaccinated mild 21-40 121 17 unvaccinated mild 0-20 122 38 vaccinated mild 21-40 123 82 vaccinated mild 80+ 124 72 vaccinated mild 61-80 125 44 unvaccinated severe 41-60 126 E1 vaccinated mild 80+ 127 44 unvaccinated severe 41-60 128 94 vaccinated severe 80+ 129 71 vaccinated mild 61-80 130 16 unvaccinated mild 0-20 131 58 unvaccinated severe 41-60 132 64 vaccinated severe 61-80 133 71 vaccinated mild 61-80 134 91 vaccinated severe 80+ 135 92 vaccinated mild 80+ 136 36 vaccinated mild 21-40 137 88 vaccinated severe 80+ 138 84 vaccinated mild 80+ 139 73 vaccinated mild 61-80 140 71 vaccinated severe 61-80 141 39 unvaccinated mild 21-40 142 25 unvaccinated mild 21-40 143 55 unvaccinated severe 41-60 144 19 unvaccinated mild 0-20 145 19 unvaccinated mild 0-20 146 71 vaccinated severe 61-80 147 33 vaccinated mild 21-40 148 81 vaccinated severe 80+ 149 61 vaccinated severe 61-801 94 vaccinated severe 80+ 151 66 vaccinated severe 61-80 152 62 unvaccinated mild 61-80 153 32 unvaccinated mild 21-40 154 33 unvaccinated mild 21-40 155 84 vaccinated severe 80+ 156 21 unvaccinated mild 21-40 735 unvaccinated mild 21-40 158 19 unvaccinated mild 0-20 159 75 vaccinated mild 61-80 160 37 unvaccinated mild 21-40 80 vaccinated mild 61-80 162 63 vaccinated mild 61-80 163 57 unvaccinated severe 41-60 164 69 vaccinated Severe 61-80 165 25 unvaccinated severe 21-40 166 48 unvaccinated mild 41-60 167 40 unvaccinated severe 21-40 168 61 unvaccinated severe 61-80 169 93 vaccinated severe 80+ 170 51 unvaccinated severe 41-60 171 73 vaccinated severe 61-80 172 16 unvaccinated severe 0-20 173 25 unvaccinated severe 21-40 174 67 vaccinated Severe 61-80 175 77 vaccinated severe 61-80 176 69 vaccinated severe 61-80 177 36 unvaccinated severe 21-40 178 51 unvaccinated severe 41-60 179 33 unvaccinated mild 21-40 180 24 unvaccinated severe 21-40 181 66 vaccinated severe 61-80 182 24 unvaccinated mild 21-40 183 42 unvaccinated severe 41-60 184 26 unvaccinated mild 21-40 185 94 vaccinated severe 80+ 186 42 unvaccinated severe 41-60 187 75 vaccinated severe 61-80 188 51 vaccinated mild 41-60 189 80 vaccinated mild 61-80 1 94 vaccinated severe 80+ 42 unvaccinated severe 41-60 192 46 unvaccinated severe 41-60 193 71 vaccinated mild 61-80 194 94 vaccinated severe 80+ 195 90 vaccinated severe 80+ 196 51 vaccinated severe 41-60 197 56 vaccinated severe 41-60 198 45 vaccinated mild 41-60 199 61 unvaccinated severe 61-80 200 74 unvaccinated severe 61-80