music <- read.csv("C:/stats.csv", header = TRUE) > dt > table(mean) > read.csv("C:/stats.csv", header = TRUE) > music <- read.csv("C:/stats.csv", header = TRUE) > music > names(music) > music$product 184 male 22-23 thai 4 4 4 2 N N N N 3 4 185 male 24+ thai 4 4 2 2 D N S MS 4 4 186 male 24+ thai 4 4 2 2 N N N N 4 4 187 male 22-23 thai 4 2 2 2 D N N N 2 4 188 male 20-21 thai 3 2 2 2 D MD N MD 3 4 189 male 22-23 thai 4 2 2 2 N S D D 2 4 190 male 20-21 thai 3 2 3 2 MS MS MS MS 1 4 191 male 20-21 thai 2 2 2 2 D N S MS 2 4 192 male 20-21 thai 2 2 2 2 MS MS MD N 4 4 193 male 20-21 thai 2 2 3 2 MS MS N N 3 4 194 male 22-23 thai 4 4 1 2 S S N S 3 4 195 male 20-21 thai 3 3 1 2 S N N N 1 4 196 male 24+ thai 4 3 4 2 S N S N 1 4 197 male 20-21 thai 3 3 3 2 MD MD D D 4 4 198 male 20-21 thai 2 4 2 2 N D N MD 1 3 199 male 20-21 thai 3 3 3 2 D D D D 4 4 200 male 20-21 thai 3 1 2 2 MD N N N 4 4 201 male 24+ foreign 3 1 4 2 S MS D N 2 4 202 male 20-21 thai 4 1 3 2 N N S S 1 4 203 male 18-19 thai 1 2 3 1 MS MS S MS 1 3 204 male 22-23 thai 3 4 4 1 S N N N 5 3 205 male 20-21 thai 1 4 4 1 MS N MS MS 2 3 206 male 20-21 thai 2 4 1 1 S N MS N 1 3 207 male 20-21 thai 2 4 1 1 S N D MD 1 4 208 male 20-21 thai 2 2 3 1 D S S S 2 1 209 male 20-21 thai 2 2 3 1 D S S S 2 1 210 male 20-21 foreign 2 3 4 1 D N MS MS 1 1 211 male 20-21 thai 1 4 4 1 N MD MD MD 5 1 212 male 20-21 thai 2 3 1 1 MS D S MD 5 4 213 male 20-21 thai 2 1 3 3 MS MS MS S 4 1 214 male 20-21 thai 2 1 3 3 MS MS MS S 4 1 215 male 20-21 thai 2 2 2 4 MS MS N S 4 4 216 male 20-21 thai 2 3 4 4 S S MD N 1 4 217 male 20-21 thai 2 2 4 4 MS MS D S 3 4 218 male 22-23 thai 3 4 4 4 MS MS MD S 4 4 219 male 20-21 thai 2 3 4 4 S MS S MS 1 1 220 male 24+ thai 4 4 1 4 MS S N S 1 3 221 male 22-23 thai 2 4 4 4 MS MS N N 2 3 222 male 20-21 thai 3 4 2 4 MS MS MD S 1 3 223 male 20-21 thai 3 4 2 4 MS MS MD S 2 3 224 male 18-19 thai 1 4 4 4 MS S N N 4 3 225 male 20-21 thai 3 3 2 4 MS N D MS 5 3 226 male 20-21 foreign 3 3 3 4 MS MS MD S 4 3 227 male 20-21 thai 2 3 2 4 MS S D S 2 3 228 male 24+ foreign 2 2 2 4 MS MS MD MS 4 3 229 male 18-19 thai 1 2 1 4 S N N N 1 3 230 male 20-21 thai 3 3 4 4 D N N D 3 3 231 male 20-21 thai 2 2 4 4 MS S MD D 5 3 232 male 20-21 thai 3 3 3 4 MS S N S 2 3 233 male 20-21 thai 1 3 3 4 MS MS MD MS 1 3 234 male 20-21 thai 3 3 2 4 S N N D 1 3 235 male 20-21 thai 2 3 1 4 N D N D 4 3 236 male 20-21 thai 3 4 4 4 MS S N S 1 3 237 male 20-21 thai 2 4 4 4 MS MS N D 5 3 238 male 22-23 thai 4 4 4 4 S MS N S 5 3 239 male 20-21 thai 3 4 2 4 N S S MS 1 3 240 male 24+ thai 3 4 4 4 N N N N 4 3 241 male 22-23 thai 1 4 2 4 MS MS N MS 1 1 242 male 20-21 foreign 3 4 3 4 MS MS S S 7 3 243 male 20-21 thai 2 4 4 4 D N N D 4 3 244 male 22-23 thai 3 4 4 4 N N N N 3 3 245 male 24+ foreign 3 4 2 4 MS MS S N 1 3 246 male 22-23 thai 3 4 2 4 MS MS N S 4 3 247 male 20-21 thai 1 4 4 4 N S N S 2 1 248 male 20-21 thai 2 4 4 4 MS MS MD N 3 1 249 male 20-21 thai 3 4 4 4 MD MD MD MD 2 1 250 male 20-21 thai 2 2 4 4 N N N N 1 2 251 male 20-21 thai 2 4 4 4 N N N N 2 2 252 male 18-19 thai 1 1 2 4 D N N N 1 2 253 male 20-21 thai 2 1 2 4 MS MS S S 1 2 254 male 20-21 thai 4 4 2 4 N N D S 2 2 255 male 20-21 thai 2 3 4 4 N N N N 4 4 256 male 22-23 thai 4 2 4 4 N N N D 1 4 257 male 20-21 foreign 2 2 4 4 MS MS MD N 1 4 258 male 22-23 thai 4 2 4 4 MD MD MD MD 2 4 259 male 20-21 thai 3 2 2 4 N D N N 1 4 260 male 22-23 thai 3 4 4 4 S N N N 2 4 261 male 24+ thai 4 4 4 4 N S N N 7 4 262 male 20-21 thai 4 4 4 4 MS MS N N 2 4 263 male 22-23 thai 2 2 2 4 D MD N MD 6 4 264 male 20-21 thai 4 2 1 4 D MD D D 7 4 265 male 20-21 thai 3 1 4 4 D N N D 3 4 266 male 18-19 thai 1 1 4 4 MS MS D MS 4 4 267 male 20-21 thai 3 1 4 4 N N N N 3 4 268 male 24+ thai 4 4 4 4 S N N MS 4 4 269 male 20-21 thai 4 4 4 4 MS S S N 2 4 270 male 20-21 thai 2 4 4 4 MS N MS MS 1 4 271 male 20-21 thai 2 4 4 4 D N N S 3 4 272 male 22-23 foreign 3 4 1 4 MD D N D 4 4 273 male 20-21 thai 3 1 3 4 N N N N 4 4 274 male 24+ foreign 4 1 1 4 MS S S S 2 4 275 male 20-21 thai 1 1 4 4 N S N S 7 4 276 male 18-19 thai 2 3 4 4 MS MS D N 1 4 277 male 20-21 thai 4 4 4 4 S N N S 6 4 278 male 22-23 thai 4 4 4 4 N N N D 5 4 279 male 20-21 thai 2 4 2 4 N N N N 4 4 280 male 24+ thai 3 4 4 4 N S N S 3 4 281 male 18-19 thai 1 4 4 4 MD MD MD MD 2 4 282 male 22-23 thai 3 4 2 4 S N D MS 5 4 283 male 20-21 thai 2 4 2 4 N N N N 4 4 284 male 20-21 thai 3 2 2 3 MD D N MD 6 4 285 male 20-21 thai 3 2 2 3 MD D N MD 2 3 286 male 22-23 thai 4 2 2 3 D N N S 1 3 287 male 20-21 thai 2 2 1 3 N D D N 4 3 288 male 20-21 thai 4 2 1 3 MD S N D 3 3 289 male 20-21 thai 4 2 4 3 N D S N 2 3 290 male 18-19 thai 1 4 2 3 N N N D 2 3 291 male 20-21 thai 1 4 2 3 MS N D MD 1 3 292 male 20-21 thai 1 4 1 3 N S S S 4 3 293 male 22-23 thai 2 3 4 3 S MD N MD 1 3 294 male 22-23 thai 4 3 1 3 N N N N 1 3 295 male 20-21 thai 3 1 2 3 N MD N MD 1 3 296 male 20-21 thai 3 2 1 3 N N D MS 3 4 297 male 20-21 thai 2 2 2 3 D D D MD 6 4 298 male 20-21 thai 3 4 1 3 D D N D 3 4 299 male 24+ foreign 2 4 2 3 N D N MD 1 4 300 male 20-21 thai 1 1 4 3 S MS N N 2 4 301 male 18-19 thai 1 4 4 3 MS MD MD D 6 1 302 male 20-21 thai 4 3 1 3 MD MD MD N 3 1 303 male 24+ foreign 2 3 4 3 MS S S S 2 1 304 male 20-21 foreign 2 3 3 1 MS MS MS MS 1 1 305 male 22-23 thai 4 3 1 1 MS MS MS MS 1 1 306 male 22-23 thai 3 3 1 1 MS MS MS MS 1 2 307 male 24+ thai 3 3 1 1 S N D S 2 4 308 male 22-23 thai 2 3 2 1 MS MS MS S 6 1 309 male 20-21 thai 2 4 1 1 MS MS MS MS 2 4 310 male 24+ thai 4 4 4 1 MS S MS MS 3 3 311 male 22-23 thai 3 4 3 1 S N MS S 6 3 312 male 22-23 thai 3 4 3 1 S S S S 2 3 313 male 20-21 thai 2 4 3 1 S N N S 3 4 314 male 22-23 foreign 3 4 2 1 MS MS MS MS 2 4 315 male 22-23 thai 4 4 2 1 MS MS S S 1 3 316 male 20-21 thai 2 4 3 1 S S S S 4 2 317 male 20-21 thai 4 4 2 1 S N N D 4 3 318 male 24+ thai 4 4 4 1 S MS N S 5 3 319 male 20-21 thai 3 4 2 1 S S S MS 3 3 > music <- read.csv("C:/stats.csv", header = TRUE) > music gender age nationality academic duration mean product cost convenience morality quality sort.music maintanance 1 female 20-21 thai 2 4 4 4 D MS D MS 2 2 2 female 20-21 thai 2 3 4 4 MS MS D S 1 1 3 female 18-19 thai 1 3 3 4 MS MS S MS 4 1 4 female 18-19 thai 1 3 3 4 MS MS S MS 4 1 5 female 18-19 thai 1 3 4 4 S N MD S 5 3 6 female 18-19 thai 1 3 4 4 D N MD S 1 3 7 female 20-21 thai 2 3 4 1 N MS S MS 6 3 8 female 20-21 thai 3 2 1 4 N S D S 1 3 9 female 20-21 thai 3 2 1 4 N S D S 1 3 10 female 20-21 thai 3 2 2 4 MS MS N S 1 3 11 female 20-21 thai 3 2 2 4 MS MS N S 1 3 12 female 20-21 thai 2 3 4 4 N N N N 4 4 13 female 20-21 thai 2 3 4 4 MS MS D D 3 4 14 female 20-21 thai 2 4 4 4 N MS N S 3 4 15 female 20-21 thai 3 4 4 4 N MS N S 2 4 16 female 20-21 thai 2 4 4 1 N N N N 5 4 17 female 18-19 thai 1 2 2 3 N S S MS 4 4 18 female 22-23 thai 2 2 2 4 N MS N N 2 4 19 female 22-23 thai 3 2 2 4 N MS N N 2 4 20 female 20-21 thai 2 4 2 4 MS MS N N 1 4 21 female 18-19 thai 2 2 1 3 N N N D 1 4 22 female 20-21 thai 2 1 1 3 S S MS S 4 4 23 female 20-21 thai 3 3 1 3 S S S S 4 4 24 female 20-21 thai 2 4 2 3 S S S S 1 4 25 female 18-19 thai 1 4 3 3 MS MS MS MS 1 4 26 female 22-23 thai 4 1 3 3 D N N D 1 4 27 female 20-21 thai 2 1 1 3 N S N MS 1 3 28 female 22-23 thai 4 3 3 3 N D N N 1 3 29 female 18-19 thai 1 3 2 3 D N N D 1 3 30 female 20-21 foreign 2 3 2 3 S N N S 1 3 31 female 22-23 thai 4 3 2 3 N N N N 1 3 32 female 22-23 thai 4 4 2 3 N N N D 2 3 33 female 18-19 thai 2 4 2 3 N S MD D 3 3 34 female 20-21 foreign 2 4 2 3 MS MS N S 3 3 35 female 22-23 thai 4 2 2 3 D D D D 4 3 36 female 18-19 thai 1 1 4 3 D N MS MS 4 1 37 female 20-21 thai 2 2 1 3 N S D S 1 1 38 female 20-21 thai 1 1 1 1 MS S MS MS 1 4 39 female 18-19 thai 2 1 1 1 S D MS D 3 4 40 female 18-19 thai 2 1 1 1 N N S S 3 4 41 female 18-19 thai 1 3 4 1 D D D MD 3 4 42 female 20-21 thai 2 4 2 1 MS S MS MS 1 3 43 female 20-21 thai 3 1 2 1 N N N MS 3 3 44 female 18-19 thai 1 4 3 1 S MS MS MS 1 3 45 female 22-23 thai 3 4 3 1 N S N N 1 3 46 female 18-19 thai 2 4 3 1 N N N S 1 3 47 female 20-21 thai 3 4 3 1 S N MS MS 1 3 48 famale 18-19 thai 1 4 2 2 MS MS D S 1 2 49 famale 22-23 thai 3 4 1 2 MD N S MD 1 4 50 famale 22-23 thai 3 4 1 2 MD N S MD 1 4 51 famale 20-21 thai 3 1 1 2 MS MS MD MS 4 4 52 famale 18-19 thai 2 1 1 2 MS MS N N 2 4 53 famale 20-21 thai 2 3 2 2 MS MS S N 3 4 54 famale 18-19 foreign 3 3 3 2 N S S MS 3 4 55 famale 18-19 foreign 1 3 3 2 N S S MS 3 4 56 famale 20-21 thai 4 4 2 2 N D D D 3 3 57 famale 20-21 thai 2 1 1 2 S MS N N 1 3 58 famale 18-19 thai 1 2 1 2 S S MS MS 4 3 59 famale 22-23 thai 3 4 2 2 N S D N 1 3 60 famale 20-21 thai 2 2 1 2 MS S D S 4 3 61 famale 22-23 thai 3 4 2 2 N S D N 1 3 62 famale 20-21 thai 3 4 2 2 S S D N 3 3 63 famale 20-21 thai 2 2 2 2 S S N N 1 3 64 famale 20-21 thai 2 2 2 2 S S N N 1 3 65 famale 22-23 thai 2 2 2 2 MS MD D N 4 3 66 famale 22-23 thai 2 2 2 2 MS MD D N 4 3 67 famale 18-19 foreign 1 4 3 2 N S S MS 3 3 68 famale 18-19 foreign 1 4 3 2 N S S MS 3 3 69 famale 18-19 thai 2 4 4 3 MS N N MS 3 3 70 famale 18-19 thai 2 4 4 3 MS N N MS 3 3 71 famale 20-21 thai 2 4 1 3 MS MS S N 5 3 72 famale 20-21 foreign 4 2 2 3 MS MD MD N 4 3 73 famale 20-21 foreign 2 2 3 3 MS MD MD N 4 3 74 famale 20-21 thai 2 1 1 1 S MS S MS 1 1 75 famale 22-23 thai 3 4 1 1 N S S MS 4 1 76 famale 22-23 thai 3 4 1 1 N S S MS 4 1 77 famale 22-23 thai 2 4 4 4 N N N N 3 4 78 famale 20-21 thai 2 4 2 4 MS N MD N 4 4 79 famale 22-23 thai 4 3 4 4 MD MS MS MS 3 4 80 famale 20-21 thai 3 3 4 4 D N D N 1 4 81 famale 22-23 foreign 4 1 2 4 S S S S 3 4 82 famale 20-21 thai 1 2 1 4 D MD MS D 1 4 83 famale 20-21 thai 1 4 3 4 MS MS MD N 4 4 84 famale 18-19 thai 1 4 2 4 N N MS N 4 4 85 famale 20-21 foreign 1 4 4 4 D S MD MS 3 4 86 famale 22-23 thai 3 4 4 4 N MS S N 3 4 87 famale 22-23 thai 3 4 2 4 MS MS S MS 4 4 88 famale 20-21 thai 2 4 2 4 S MS D N 4 1 89 famale 22-23 foreign 4 4 4 4 MS S N D 4 3 90 famale 22-23 thai 3 4 2 4 N D D N 3 2 91 famale 18-19 thai 1 3 2 4 MS S D S 1 3 92 famale 22-23 thai 4 3 1 4 MS MS MD N 1 3 93 famale 20-21 thai 2 3 2 4 MS MS D N 1 3 94 famale 18-19 thai 2 3 3 4 MD D S N 4 3 95 famale 20-21 thai 2 3 2 4 S S N MS 1 3 96 famale 20-21 thai 3 2 4 4 N N N S 1 3 97 famale 18-19 thai 2 4 4 4 N N S MD 2 3 98 famale 22-23 thai 4 3 2 4 N N N N 2 3 99 famale 20-21 thai 1 4 2 4 N MD MD MD 1 3 100 famale 18-19 thai 2 4 2 4 N S N D 1 3 101 famale 18-19 thai 1 2 2 4 MS S MD N 1 3 102 famale 20-21 thai 2 4 4 4 N N N N 1 3 103 famale 22-23 thai 3 4 4 4 S N N S 3 3 104 famale 20-21 thai 2 4 2 4 MS S N MS 1 3 105 famale 20-21 thai 2 4 4 2 S N N D 4 4 106 famale 20-21 thai 2 3 1 2 N N N N 3 4 107 famale 20-21 foreign 2 2 4 2 N N S D 3 4 108 famale 20-21 thai 4 4 4 2 MS N MD N 4 4 109 famale 20-21 thai 4 4 2 2 N N N N 1 4 110 famale 20-21 thai 1 4 2 2 MS MS MD S 1 4 111 famale 24+ thai 4 4 2 2 S N N D 4 4 112 famale 22-23 thai 4 4 3 2 N N N N 1 2 113 famale 20-21 foreign 2 3 2 2 D N D S 2 4 114 famale 22-23 foreign 2 2 2 2 N S S MS 1 4 115 famale 20-21 thai 2 4 1 2 N N N N 1 3 116 famale 20-21 thai 2 3 1 2 MS S N D 4 3 117 famale 18-19 thai 2 2 1 2 MS S N MS 1 3 118 famale 20-21 thai 2 3 4 2 N S S S 3 3 119 famale 20-21 foreign 2 3 2 2 S S MD N 2 3 120 famale 24+ thai 3 3 4 2 N S MS D 1 3 121 famale 22-23 thai 4 3 4 2 N N N D 2 3 122 famale 20-21 thai 4 4 4 2 N N N N 1 3 123 famale 20-21 thai 3 1 2 2 S MS S S 1 3 124 famale 20-21 thai 4 2 2 2 N D N D 3 3 125 famale 20-21 thai 2 2 4 2 S S N MS 2 3 126 famale 20-21 thai 4 4 1 2 N S N N 1 3 127 famale 20-21 thai 3 2 2 2 N N S N 1 3 128 famale 20-21 thai 1 2 2 2 MS N N N 1 1 129 famale 20-21 thai 3 1 3 2 S MS N S 1 3 130 famale 22-23 thai 1 2 2 2 MS D N MS 4 3 131 famale 20-21 thai 3 2 1 2 N N N N 1 2 132 famale 22-23 thai 1 2 1 2 N N N N 4 1 133 famale 18-19 thai 2 3 4 2 N MS MD S 5 1 134 famale 24+ thai 1 2 1 2 N N N N 1 1 135 famale 18-19 thai 2 2 3 2 MS MS MD D 1 1 136 famale 22-23 foreign 4 4 2 1 S MS S MS 3 2 137 famale 22-23 foreign 2 3 1 1 MS MS MS MS 1 1 138 famale 20-21 thai 4 1 1 1 S S N N 1 1 139 famale 20-21 thai 2 4 2 1 S S MS MS 3 1 140 famale 20-21 thai 3 4 1 1 N D N MD 1 3 141 famale 20-21 thai 3 2 1 1 MD MD MD MD 1 3 142 famale 22-23 foreign 3 4 1 1 MS MS MS MS 5 3 143 famale 18-19 thai 1 2 4 1 S S S MS 5 3 144 famale 20-21 thai 2 2 1 1 N N D D 2 3 145 famale 20-21 thai 3 4 4 1 MS S MS MS 3 3 146 famale 20-21 thai 3 1 2 1 N N N MS 3 3 147 famale 20-21 thai 2 4 4 1 S MS S S 5 3 148 famale 20-21 foreign 3 4 4 1 MS MS MS MS 1 3 149 male 18-19 thai 2 1 2 2 S S N N 2 3 150 male 20-21 thai 2 3 2 2 MS MS MD MS 1 3 151 male 22-23 thai 4 3 4 2 MS S N N 4 3 152 male 18-19 thai 2 4 1 2 MS MS MD N 1 4 153 male 20-21 thai 2 1 1 2 N N N N 5 1 154 male 22-23 thai 3 4 1 2 MD N D N 3 3 155 male 22-23 thai 3 2 2 2 N N N N 4 3 156 male 20-21 thai 3 4 2 2 N D N MD 1 3 157 male 18-19 thai 2 4 4 2 N S N N 2 3 158 male 20-21 thai 4 1 3 2 S N MS S 2 3 159 male 18-19 thai 1 2 2 2 S N N S 2 3 160 male 20-21 thai 3 2 2 2 MD D MD MD 3 3 161 male 20-21 thai 2 2 4 2 MS MS D N 1 3 162 male 22-23 thai 4 2 1 2 N N N N 1 3 163 male 20-21 thai 1 2 2 2 D D D D 1 3 164 male 22-23 thai 3 2 2 2 N D N D 2 3 165 male 22-23 thai 2 2 2 2 S N N S 5 3 166 male 20-21 thai 3 4 2 2 S S S MS 3 3 167 male 22-23 thai 4 4 3 2 MD N N MS 2 3 168 male 22-23 thai 2 4 2 2 S S N S 2 3 169 male 22-23 thai 2 4 4 2 D N S MS 2 3 170 male 22-23 thai 4 3 4 2 N D D N 1 3 171 male 22-23 thai 4 3 2 2 MS MD N N 1 3 172 male 18-19 thai 1 3 4 2 MD MD S N 1 3 173 male 20-21 thai 3 3 2 2 MD D S MS 2 3 174 male 24+ thai 1 1 2 2 MS MS D S 1 3 175 male 20-21 thai 3 4 2 2 MD D D D 1 2 176 male 22-23 thai 4 4 1 2 N N MD N 1 1 177 male 22-23 thai 3 4 4 2 S MS S MS 1 1 178 male 20-21 thai 2 3 2 2 D D N S 2 1 179 male 22-23 thai 2 2 1 2 N D N N 1 1 180 male 24+ thai 4 4 3 2 S N N S 4 1 181 male 22-23 thai 3 4 4 2 N N N N 2 4 182 male 20-21 thai 2 4 1 2 MD MS MS MS 2 4 183 male 22-23 foreign 1 4 4 2 MS N MD D 4 4 184 male 22-23 thai 4 4 4 2 N N N N 3 4 185 male 24+ thai 4 4 2 2 D N S MS 4 4 186 male 24+ thai 4 4 2 2 N N N N 4 4 187 male 22-23 thai 4 2 2 2 D N N N 2 4 188 male 20-21 thai 3 2 2 2 D MD N MD 3 4 189 male 22-23 thai 4 2 2 2 N S D D 2 4 190 male 20-21 thai 3 2 3 2 MS MS MS MS 1 4 191 male 20-21 thai 2 2 2 2 D N S MS 2 4 192 male 20-21 thai 2 2 2 2 MS MS MD N 4 4 193 male 20-21 thai 2 2 3 2 MS MS N N 3 4 194 male 22-23 thai 4 4 1 2 S S N S 3 4 195 male 20-21 thai 3 3 1 2 S N N N 1 4 196 male 24+ thai 4 3 4 2 S N S N 1 4 197 male 20-21 thai 3 3 3 2 MD MD D D 4 4 198 male 20-21 thai 2 4 2 2 N D N MD 1 3 199 male 20-21 thai 3 3 3 2 D D D D 4 4 200 male 20-21 thai 3 1 2 2 MD N N N 4 4 201 male 24+ foreign 3 1 4 2 S MS D N 2 4 202 male 20-21 thai 4 1 3 2 N N S S 1 4 203 male 18-19 thai 1 2 3 1 MS MS S MS 1 3 204 male 22-23 thai 3 4 4 1 S N N N 5 3 205 male 20-21 thai 1 4 4 1 MS N MS MS 2 3 206 male 20-21 thai 2 4 1 1 S N MS N 1 3 207 male 20-21 thai 2 4 1 1 S N D MD 1 4 208 male 20-21 thai 2 2 3 1 D S S S 2 1 209 male 20-21 thai 2 2 3 1 D S S S 2 1 210 male 20-21 foreign 2 3 4 1 D N MS MS 1 1 211 male 20-21 thai 1 4 4 1 N MD MD MD 5 1 212 male 20-21 thai 2 3 1 1 MS D S MD 5 4 213 male 20-21 thai 2 1 3 3 MS MS MS S 4 1 214 male 20-21 thai 2 1 3 3 MS MS MS S 4 1 215 male 20-21 thai 2 2 2 4 MS MS N S 4 4 216 male 20-21 thai 2 3 4 4 S S MD N 1 4 217 male 20-21 thai 2 2 4 4 MS MS D S 3 4 218 male 22-23 thai 3 4 4 4 MS MS MD S 4 4 219 male 20-21 thai 2 3 4 4 S MS S MS 1 1 220 male 24+ thai 4 4 1 4 MS S N S 1 3 221 male 22-23 thai 2 4 4 4 MS MS N N 2 3 222 male 20-21 thai 3 4 2 4 MS MS MD S 1 3 223 male 20-21 thai 3 4 2 4 MS MS MD S 2 3 224 male 18-19 thai 1 4 4 4 MS S N N 4 3 225 male 20-21 thai 3 3 2 4 MS N D MS 5 3 226 male 20-21 foreign 3 3 3 4 MS MS MD S 4 3 227 male 20-21 thai 2 3 2 4 MS S D S 2 3 228 male 24+ foreign 2 2 2 4 MS MS MD MS 4 3 229 male 18-19 thai 1 2 1 4 S N N N 1 3 230 male 20-21 thai 3 3 4 4 D N N D 3 3 231 male 20-21 thai 2 2 4 4 MS S MD D 5 3 232 male 20-21 thai 3 3 3 4 MS S N S 2 3 233 male 20-21 thai 1 3 3 4 MS MS MD MS 1 3 234 male 20-21 thai 3 3 2 4 S N N D 1 3 235 male 20-21 thai 2 3 1 4 N D N D 4 3 236 male 20-21 thai 3 4 4 4 MS S N S 1 3 237 male 20-21 thai 2 4 4 4 MS MS N D 5 3 238 male 22-23 thai 4 4 4 4 S MS N S 5 3 239 male 20-21 thai 3 4 2 4 N S S MS 1 3 240 male 24+ thai 3 4 4 4 N N N N 4 3 241 male 22-23 thai 1 4 2 4 MS MS N MS 1 1 242 male 20-21 foreign 3 4 3 4 MS MS S S 7 3 243 male 20-21 thai 2 4 4 4 D N N D 4 3 244 male 22-23 thai 3 4 4 4 N N N N 3 3 245 male 24+ foreign 3 4 2 4 MS MS S N 1 3 246 male 22-23 thai 3 4 2 4 MS MS N S 4 3 247 male 20-21 thai 1 4 4 4 N S N S 2 1 248 male 20-21 thai 2 4 4 4 MS MS MD N 3 1 249 male 20-21 thai 3 4 4 4 MD MD MD MD 2 1 250 male 20-21 thai 2 2 4 4 N N N N 1 2 251 male 20-21 thai 2 4 4 4 N N N N 2 2 252 male 18-19 thai 1 1 2 4 D N N N 1 2 253 male 20-21 thai 2 1 2 4 MS MS S S 1 2 254 male 20-21 thai 4 4 2 4 N N D S 2 2 255 male 20-21 thai 2 3 4 4 N N N N 4 4 256 male 22-23 thai 4 2 4 4 N N N D 1 4 257 male 20-21 foreign 2 2 4 4 MS MS MD N 1 4 258 male 22-23 thai 4 2 4 4 MD MD MD MD 2 4 259 male 20-21 thai 3 2 2 4 N D N N 1 4 260 male 22-23 thai 3 4 4 4 S N N N 2 4 261 male 24+ thai 4 4 4 4 N S N N 7 4 262 male 20-21 thai 4 4 4 4 MS MS N N 2 4 263 male 22-23 thai 2 2 2 4 D MD N MD 6 4 264 male 20-21 thai 4 2 1 4 D MD D D 7 4 265 male 20-21 thai 3 1 4 4 D N N D 3 4 266 male 18-19 thai 1 1 4 4 MS MS D MS 4 4 267 male 20-21 thai 3 1 4 4 N N N N 3 4 268 male 24+ thai 4 4 4 4 S N N MS 4 4 269 male 20-21 thai 4 4 4 4 MS S S N 2 4 270 male 20-21 thai 2 4 4 4 MS N MS MS 1 4 271 male 20-21 thai 2 4 4 4 D N N S 3 4 272 male 22-23 foreign 3 4 1 4 MD D N D 4 4 273 male 20-21 thai 3 1 3 4 N N N N 4 4 274 male 24+ foreign 4 1 1 4 MS S S S 2 4 275 male 20-21 thai 1 1 4 4 N S N S 7 4 276 male 18-19 thai 2 3 4 4 MS MS D N 1 4 277 male 20-21 thai 4 4 4 4 S N N S 6 4 278 male 22-23 thai 4 4 4 4 N N N D 5 4 279 male 20-21 thai 2 4 2 4 N N N N 4 4 280 male 24+ thai 3 4 4 4 N S N S 3 4 281 male 18-19 thai 1 4 4 4 MD MD MD MD 2 4 282 male 22-23 thai 3 4 2 4 S N D MS 5 4 283 male 20-21 thai 2 4 2 4 N N N N 4 4 284 male 20-21 thai 3 2 2 3 MD D N MD 6 4 285 male 20-21 thai 3 2 2 3 MD D N MD 2 3 286 male 22-23 thai 4 2 2 3 D N N S 1 3 287 male 20-21 thai 2 2 1 3 N D D N 4 3 288 male 20-21 thai 4 2 1 3 MD S N D 3 3 289 male 20-21 thai 4 2 4 3 N D S N 2 3 290 male 18-19 thai 1 4 2 3 N N N D 2 3 291 male 20-21 thai 1 4 2 3 MS N D MD 1 3 292 male 20-21 thai 1 4 1 3 N S S S 4 3 293 male 22-23 thai 2 3 4 3 S MD N MD 1 3 294 male 22-23 thai 4 3 1 3 N N N N 1 3 295 male 20-21 thai 3 1 2 3 N MD N MD 1 3 296 male 20-21 thai 3 2 1 3 N N D MS 3 4 297 male 20-21 thai 2 2 2 3 D D D MD 6 4 298 male 20-21 thai 3 4 1 3 D D N D 3 4 299 male 24+ foreign 2 4 2 3 N D N MD 1 4 300 male 20-21 thai 1 1 4 3 S MS N N 2 4 301 male 18-19 thai 1 4 4 3 MS MD MD D 6 1 302 male 20-21 thai 4 3 1 3 MD MD MD N 3 1 303 male 24+ foreign 2 3 4 3 MS S S S 2 1 304 male 20-21 foreign 2 3 3 1 MS MS MS MS 1 1 305 male 22-23 thai 4 3 1 1 MS MS MS MS 1 1 306 male 22-23 thai 3 3 1 1 MS MS MS MS 1 2 307 male 24+ thai 3 3 1 1 S N D S 2 4 308 male 22-23 thai 2 3 2 1 MS MS MS S 6 1 309 male 20-21 thai 2 4 1 1 MS MS MS MS 2 4 310 male 24+ thai 4 4 4 1 MS S MS MS 3 3 311 male 22-23 thai 3 4 3 1 S N MS S 6 3 312 male 22-23 thai 3 4 3 1 S S S S 2 3 313 male 20-21 thai 2 4 3 1 S N N S 3 4 314 male 22-23 foreign 3 4 2 1 MS MS MS MS 2 4 315 male 22-23 thai 4 4 2 1 MS MS S S 1 3 316 male 20-21 thai 2 4 3 1 S S S S 4 2 317 male 20-21 thai 4 4 2 1 S N N D 4 3 318 male 24+ thai 4 4 4 1 S MS N S 5 3 319 male 20-21 thai 3 4 2 1 S S S MS 3 3 > names(music) [1] "gender" "age" "nationality" "academic" "duration" "mean" "product" "cost" [9] "convenience" "morality" "quality" "sort.music" "maintanance" > music$product [1] 4 4 4 4 4 4 1 4 4 4 4 4 4 4 4 1 3 4 4 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 [61] 2 2 2 2 2 2 2 2 3 3 3 3 3 1 1 1 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 [121] 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 [181] 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 3 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 [241] 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 [301] 3 3 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 > music <- read.csv("C:/stats.csv", header = TRUE) > music$product [1] unlic.download unlic.download unlic.download unlic.download unlic.download unlic.download lic.store unlic.download [9] unlic.download unlic.download unlic.download unlic.download unlic.download unlic.download unlic.download lic.store [17] lic.download unlic.download unlic.download unlic.download lic.download lic.download lic.download lic.download [25] lic.download lic.download lic.download lic.download lic.download lic.download lic.download lic.download [33] lic.download lic.download lic.download lic.download lic.download lic.store lic.store lic.store [41] lic.store lic.store lic.store lic.store lic.store lic.store lic.store pirate.cd [49] pirate.cd pirate.cd pirate.cd 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unlic.download lic.download lic.download lic.download lic.download lic.download [289] lic.download lic.download lic.download lic.download lic.download lic.download lic.download lic.download [297] lic.download lic.download lic.download lic.download lic.download lic.download lic.download lic.store [305] lic.store lic.store lic.store lic.store lic.store lic.store lic.store lic.store [313] lic.store lic.store lic.store lic.store lic.store lic.store lic.store Levels: lic.download lic.store pirate.cd unlic.download > table(music$product) lic.download lic.store pirate.cd unlic.download 45 54 106 114 > table(music$product, music$cost) D MD MS N S lic.download 7 4 12 16 6 lic.store 4 1 17 12 20 pirate.cd 9 11 24 39 23 unlic.download 12 6 46 36 14 > levels(music$cost) [1] "D" "MD" "MS" "N" "S" > levels(music$cost) <- c("MS", "S", "N", "D", "MD") > levels(music$cost) [1] "MS" "S" "N" "D" "MD" > table(music$product, music$cost) MS S N D MD lic.download 7 4 12 16 6 lic.store 4 1 17 12 20 pirate.cd 9 11 24 39 23 unlic.download 12 6 46 36 14 > xtabs(~ cost + product, data = music) product cost lic.download lic.store pirate.cd unlic.download MS 7 4 9 12 S 4 1 11 6 N 12 17 24 46 D 16 12 39 36 MD 6 20 23 14