2.3.7 In a study of physical endurance levels of male college freshmen the following composite endurance scores based on several exercise routines were collected.

254 281 192 260 212 179 225 179 181 149 182 210 235 239 258 166 159 223 186 190 180 188 135 233 220 204 219 211 245 151 198 190 151 157 204 238 205 229 191 200 222 187 134 193 264 312 214 227 190 212 165 194 206 193 218 198 241 149 164 225 265 222 264 249 175 205 252 210 178 159 220 201 203 172 234 198 173 187 189 237 272 195 227 230 168 232 217 249 196 223 232 191 175 236 152 258 155 215 197 210 214 278 252 283 205 184 172 228 193 130 218 213 172 159 203 212 117 197 206 198 169 187 204 180 261 236 217 205 212 218 191 124 199 235 139 231 116 182 243 217 251 206 173 236 215 228 183 204 186 134 188 195 240 163 208 From these data construct:

a. A frequency distribution.

b. A relative frequency distribution.

c. A frequency polygon.

d. A histogram.