BCS Level 4 Certificate in Data Analysis Tools QAN 603/0824/2
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1 S Level 4 ertificate in ata nalysis Tools QN 603/0824/2 Specimen Paper Record your surname / last / family name and initials on the answer sheet. Specimen paper only 20 multiple-choice questions 1 mark awarded to each question. Mark only one answer to each question. There are no trick questions. number of possible answers are given for each question, indicated by either... or. Your answers should be clearly indicated on the answer sheet. Pass mark is 13/20. opying of this paper is expressly forbidden without the direct approval of S, The hartered Institute for IT. This qualification is regulated by Ofqual (in England). Page 1 of 6 opyright S 2018 S Level 4 ertificate in ata nalysis Tools Specimen Paper Version V1.0 pril 2018
2 1 In a distribution that is positively skewed, which of the following is TYPILLY TRUE? The standard deviation is greater than the range. The median is greater than the mean. The median and mean are equal. The mean is greater than the median. 2 R can easily be extended via what? Models. Packages. Slides. Pockets. 3 What is the median in the following set of data? , 2, 2, 3, 5, 6, 9 4 What measure will always change if a single value in a dataset changes? Median. Mode. Mean. ll of these. 5 What type of join is used to combine the result-set of two or more SELET statements? Full. Outer. Union. Inner. Page 2 of 6 opyright S 2018 S Level 4 ertificate in ata nalysis Tools Specimen Paper Version V1.0 pril 2018
3 6 What will be reduced if multiple disparate datasets are integrated? ata availability. ata collaboration. ata complexity. ata integrity. 7 When preparing data for analysis to improve accuracy, quality and usefulness, which of the following are NOT suitable ways to respond to an error? a) ccept. b) orrect error. c) Ignore. d) reate null value. a and b only. b and c only. a and d only. c and d only. 8 Which of the following describes managing an organisation s critical data, providing a single point of reference? Important ata Management. Master ata Management. Vital ata Management. Essential ata Management. 9 Which command is used to select only one copy of each set of duplicate rows in SQL? SELET IFFERENT SELET NONE SELET ISTINT SELET LL Page 3 of 6 opyright S 2018 S Level 4 ertificate in ata nalysis Tools Specimen Paper Version V1.0 pril 2018
4 10 Which of the following are data quality dimensions? a) Uniqueness. b) Timeliness. c) onsistency. d) leanliness. a and b only. c and d only. a, b and c only. b, c and d only. 11 Which of the following are user interfaces? a) ata dashboard. b) Performance scorecard. c) ata transparency. d) ynamic charts. a and b only. c and d only. b, c and d only. a, b and d only. 12 Which of the following is a monthly report, which uses dynamic charts and tables to summarise a company's sales turnover? ashboard. Graph. Screen. ata. 13 ates in a column of a spreadsheet are an example of which type of data? Unstructured. Semi-structured. Structured. Multi-structured. Page 4 of 6 opyright S 2018 S Level 4 ertificate in ata nalysis Tools Specimen Paper Version V1.0 pril 2018
5 14 Which of the following is NOT a core data type in Python? lass. Lists. ictionary. Tuples. 15 Which of the following is NOT a reason for developing appropriate testing strategies? To ensure that unified data sets are orrect. omplete. Legal. Up to date. 16 Which of the following is NOT a type of join? Left. Right. Select into. Insert into. 17 Which of the following is NOT an option to accomplish data migration? Merge two systems into a brand new one. Merge one system into another. Remove one of two merged systems from another, without further action. reate a common view on top of two separate systems. 18 Which SQL statement is often used with aggregate functions to assemble the result-set by one or more columns? ount Order by Group by Round Page 5 of 6 opyright S 2018 S Level 4 ertificate in ata nalysis Tools Specimen Paper Version V1.0 pril 2018
6 19 Which technique can be used to unveil the content and structure of a data set? ata modelling. ata profiling. ata processing. ata describing. 20 Which testing process is used to validate the resource usage, scalability, and reliability of a product? Owner acceptance testing. Technical acceptance testing. User acceptance testing. Performance stress testing. -End of Paper- Page 6 of 6 opyright S 2018 S Level 4 ertificate in ata nalysis Tools Specimen Paper Version V1.0 pril 2018
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