The nicotine contents, in milligrams, for 40 cigarettes of a certain brand were recorded as

follows:

109 192 231 179 228 164 072 169 185 182

174 147 197 085 124 179 246 188 208 167

158 203 170 217 255 137 193 140 164 209

211 186 190 168 151 175 163 237 175 169

a) Construct Frequency Distribution.

b) Sketch Histogram and Frequency Polygon.

c) Calculate Relative and Cumulative Frequency.

d) Sketch OGIVE.