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Computer science · University

Cleaning and validation

Reordering rows according to selected values while preserving row relationships.

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Prerequisites

Basic arithmetic and computer literacy.

Study notes

Sort

Reordering rows according to selected values while preserving row relationships.

Filter

Temporarily showing only rows meeting stated criteria.

Data validation

Rules restricting or checking allowed cell entries.

Duplicate

A repeated record that may be legitimate or an error depending on context.

Worked examples

Which term best matches this description: Reordering rows according to selected values while preserving row relationships.

Sort is the matching concept in this lesson.

Sort

Which term best matches this description: Temporarily showing only rows meeting stated criteria.

Filter is the matching concept in this lesson.

Filter

Check your understanding

  1. Which concept would you apply first in a situation where rules restricting or checking allowed cell entries.

    1. Sort
    2. Duplicate
    3. Data validation
    4. Filter

  2. Name the concept described as: A repeated record that may be legitimate or an error depending on context.

  3. Which statement about Sort is most accurate?

    1. Reordering rows according to selected values while preserving row relationships.
    2. A repeated record that may be legitimate or an error depending on context.
    3. Rules restricting or checking allowed cell entries.
    4. Temporarily showing only rows meeting stated criteria.

  4. Explain one important difference between Sort and Filter.

Answers and marking guidance

Answers and marking notes
  1. Data validation

    The scenario directly calls for Data validation.

  2. Duplicate

    The intended concept is Duplicate.

  3. Reordering rows according to selected values while preserving row relationships.

    The definition in the lesson notes gives the required condition.

  4. Sort: Reordering rows according to selected values while preserving row relationships. Filter: Temporarily showing only rows meeting stated criteria.

    Credit a clear distinction using both definitions and an appropriate example if supplied.

Further reading and review references

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