Discussion
Identify the correct sequence of the following activities associated with research data :
(i) Data collection
(ii) Construction of frequency tables
(iii) Cleaning of data
(iv) Presentation of data in charts.
Answer: B
The correct sequence is (i) (iii) (ii) (iv): collection, cleaning, tabulation, presentation.
Data must first be collected. Raw data then has to be cleaned, checking for and correcting errors, missing values and inconsistent entries, before anything is counted. Clean data is then organised into frequency tables, and only after tabulation is it presented in charts and graphs.
The other sequences break this logic: one tabulates and charts before cleaning, one tabulates before data has even been collected, and one presents charts first. Tabulating unclean data would carry its errors into every table and chart that follows.
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