David is entering daily rainfall values into a worksheet for a weather report, and wants to speed up data entry by leaving some values as blanks rather than typing zeroes when there is no data collected for a particular day. Explain why this will cause complications or incorrect results in the final calculation of the average rainfall. Cite any example when it might be preferable to use blanks instead of entering a zero into a worksheet for calculations.
David is entering daily rainfall values into a worksheet for a weather report, and wants to speed up data entry by leaving some values as blanks rather than typing zeroes when there is no data collected for a particular day. Explain why this will cause complications or incorrect results in the final calculation of the average rainfall. Cite any example when it might be preferable to use blanks instead of entering a zero into a worksheet for calculations.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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David is entering daily rainfall values into a worksheet for a weather report, and wants to speed up data entry by leaving some values as blanks rather than typing zeroes when there is no data collected for a particular day. Explain why this will cause complications or incorrect results in the final calculation of the average rainfall. Cite any example when it might be preferable to use blanks instead of entering a zero into a worksheet for calculations.
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