ExpertEasy1 markMultiple Choice
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.
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
cleaning
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.
Practice the full AQA GCSE Statistics Foundation Tier Paper 1
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