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    PracticeAQA GCSEAQA GCSE Statistics Foundation Tier Paper 1Question 02
    Easy1 markMultiple Choice
    Data Collection and Sampling Methodsdata handlingterminologyfoundation

    AQA GCSE · Question 02 · Data Collection and Sampling Methods

    What is the statistical name given to the removal or correction of apparently incorrect values from a table or spreadsheet?
    Circle your answer.

    Answer options:

    A.

    sampling

    B.

    convenience

    C.

    cleaning

    D.

    biased

    How to approach this question

    Read the definition provided in the question. Consider the meaning of each of the four statistical terms given as options. Select the term that best matches the description of removing or correcting incorrect values.

    Full Answer

    C.cleaning✓ Correct
    The process described is the identification and correction or removal of errors, inconsistencies, and inaccuracies in a dataset. This is known as data cleaning or data cleansing. It is a crucial step in the data processing phase of a statistical investigation to ensure the quality and reliability of the data before analysis.

    Common mistakes

    ✗ Confusing "cleaning" with "sampling". Sampling is about selecting data, not correcting it. ✗ Thinking "biased" is the answer, but bias is a systematic error, not the process of fixing errors.
    Question 01All questionsQuestion 03

    Practice the full AQA GCSE Statistics Foundation Tier Paper 1

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