. Question 2 - 30 marks This question is based on your work on...

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Question 2 - 30 marks This question is based on your work on MU123 up to and including Unit 4. An IT company develops software for the banking sector. It tests its code using an industry standard software package. Aiming to expand its business and be more competitive in the sector, the company has decided to pilot an in-house software package to test its code. A company researcher wishes to compare the times taken for each package to complete tests. Both software packages were run on 20 occasions testing the same code. The researcher records the times taken on each occasion, and these are shown in Table 1. Table 1 Comparison of test times in minutes for the industry standard and in-house software testing packages Test number Industry standard software package In-house software package 357 325 337 335 344 310 102 354 376 318 398 337 304 328 368 335 656 337 382 355 310 318 354 339 387 347 391 351 366 335 16 376 348 17 316 325 18 349 332 19 392 354 20 386 344 (a) (i) Which of the three types of investigation discussed on pages 210-214 of Unit 4 is this? Explain your answer briefly. [2] (ii) Are these primary or secondary data, from the researcher's point of view? Explain your answer briefly. [2] (b) Spend a few minutes scanning these datasets by eye. (i) List any three features that you should be looking for when scanning datasets by eye. [3] (ii) Comment on whether or not you think there might be a problem with any of the most extreme values in each column. [3]

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