Pages 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 8637 result(s) returned

3.2 Have I used the correct order for my calculation?

When calculating an answer it is important that you give careful consideration to the order of operations used in the calculation. If you are using a mixture of operations remember that certain operations take priority in a calculation. Consider the following, apparently, simple sum.

   1 + 2 × 3 = ?

What answer would you give?

Did you give 7 as your response, or 9?

The correct answer is 7 but can you explain why?

If you have a calculator handy, check that it
Author(s): The Open University

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1.4.1 Try some yourself

1 Round a measurement of 1.059 metres:

  • (a) to the nearest whole number of metres;

  • (b) to two decimal places;

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1.3.1 Try some yourself

1 Round the numbers below:

  • (a) to the nearest 10.

  • (b) to the nearest 100.

  • (c) to the nearest 1000.

  325 089,  45 982,  11 985
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2.7 Powers and roots

There are several symbols for powers and roots: for instance, 24 means ‘2 to the power 4’. An alternative to 24 is 24, where the symbol Author(s): The Open University

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3.3: Scatterplots

In recent years, graphical displays have come into prominence because computers have made them quick and easy to produce. Techniques of data exploration have been developed which have revolutionised the subject of statistics, and today no serious data analyst would carry out a formal numerical procedure without first inspecting the data by eye. Nowhere is this demonstrated more forcibly than in the way a scatterplot reveals a relationship between two variables.

Look at Author(s): The Open University

Discharging a Whitehead Torpedo - Edison films 1900
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6 What you should present

This assessment course has two parts. Part A requires you to show what you did to plan, monitor, evaluate and reflect upon your skills. Part B requires you to select examples of your work that demonstrate what you have done to improve and apply your skills. Together the two parts form a portfolio of your achievements. You can use the guidance, Bookmarks and Skills Sheets included in the OpenLearn course U529_1 Key skills – making a difference to help you structure and present your wo
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