Neco 2025 Data Processing Question 28
Practice objective / multiple choice question 28 from the 2025 Neco Data Processing examination.
A small retail shop records daily sales in a spreadsheet. Each day 200 sales entries are entered. Historical data show that 2\% of the entries contain errors. The shop plans to migrate the data to a simple database that uses input validation rules, reducing the error rate to 0.5\%.\n\nAssume the shop operates 30 days in a month. Each error, when discovered, costs the shop \(\text{₦}500\) to correct. Each spreadsheet entry occupies 150 bytes, while a database record occupies 120 bytes.\n\nCalculate the total monetary saving after one month that results from the reduced error‑correction cost. (Ignore any other costs.)
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About This Question
This is Neco 2025 Data Processing Question 28. It is one of the objective questions from the 2025 Neco Data Processing examination.
Difficulty level: Hard .
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