Basics of data literacy and its importance

The governing concept is sampling bias and representativeness. Urban smartphone users may differ from rural residents, people without smartphones, older people, or people with limited internet access. If these groups are excluded, the findings cannot reliably describe the whole population. Thus option B is correct. The other choices do not describe a valid problem with the sample or survey conclusion.

The governing concept is data minimisation and privacy. A health worker should receive the information needed for a specific legitimate task, not every detail in a patient’s record. This limits unnecessary exposure if an account, message, or system is accessed improperly. Option C is correct. The principle does not delete records, stop appropriate medical decisions, or grant every employee full access.

The governing concept is information literacy, especially evaluating and verifying digital sources. A search engine ranks or retrieves results but does not guarantee that the first result is accurate, current, unbiased, or suitable for the task. Comparing the claim with several reliable sources supports verification, so option A is correct. Reading only a title, choosing by advertisements, or sharing immediately gives no dependable evidence.

The governing concept is digital and information literacy: people must be able to access, understand, evaluate and use information. In this case, the prices are accurate, so data accuracy is not the problem. The difficulty is interpreting and applying the information. Thus option D is correct. Network availability is not identified as a problem, and the existence of the market is unrelated to the farmer’s understanding.

The governing concept is controlled information management during digital transition. If paper and digital records are both maintained without a defined source of truth, update procedure or responsibility, the same information may be entered twice or changed in only one place. This can produce duplication, conflicting values, search difficulty and confusion, making option B correct. Records do not become accurate or integrated automatically, and staff still need guidance.

The governing concept is responsible personal-data use, especially transparency, consent and privacy. Purchase history can reveal a person’s habits, so the customer should be told what is collected, why it is used and, where appropriate, asked for informed consent. Option B provides that safeguard. Publishing data, removing customer choice and keeping records forever increase privacy risk; they are not ethical precautions.

The governing concept is digital and media literacy: ranking and truth are not the same thing. Sponsored content may appear prominently because an advertiser paid for placement, not because the information is the most accurate, objective or suitable. Option B correctly tells the user to recognise the commercial label and independently check the source, evidence and date. The other options confuse visibility with truth, official status or permission to share.

The correct answer is D. Data means facts, figures, symbols, measurements, or observations that can be entered into and processed by a computer. Before processing, data may be raw and not yet meaningful; after organization and interpretation, it can become useful information. Computer size, hardware colour, and electricity amount may be attributes or measurements, but they are not the general definition of data.

The governing concept is information processing. Raw data becomes information when it is organised, analysed, or processed so that it has meaning and can support understanding or decisions. Hardware is the physical equipment, and software is the set of programs that directs the equipment; neither term means processed data. Therefore, the standard answer to processed and useful data is information, so option D is correct.