Critique of Dataset Reliability and Bias in Large Survey Data
An international market research company conducted an online survey over a 3-month period to gather opinions on a new product. The dataset comprises responses from over 10,000 participants. However, concerns have been raised regarding the sampling method, potential biases in survey design, and the overall reliability of the data collected. (a) Evaluate the dataset design […]
Data Quality Assessment: Outlier Detection & Missing Data Management
A dataset from a clinical trial study contains several anomalous values and missing entries. Analyze the dataset to improve its quality. (a) Identify potential outliers using a statistical method such as the interquartile range (IQR) rule. (b) Discuss various strategies to handle missing data and improve the overall reliability of the dataset.