
Quiz for Data Mining fundamentals
Quiz by S Meera
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14 questions
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- Q1What is the goal of data mining?To design databases for efficient data storage.To analyze data for business decision making.To collect and store large amounts of data.To extract useful patterns and knowledge from large datasets.30s
- Q2What is the key step involved in data preprocessing?Data visualizationData cleaningData analysisData modeling30s
- Q3What is association rule mining?A technique to discover interesting relationships among a set of variables in large datasets.A process to organize and sort data into groups or categories.A technique to analyze the sequential patterns in time series data.A method to predict numerical values based on historical data.30s
- Q4What is the objective of clustering in data mining?To identify association rules among variables.To predict future outcomes based on historical data.To analyze textual data and extract meaning from it.To group similar data points together based on their characteristics.30s
- Q5What is classification in data mining?A technique for categorizing data into predefined classes or labels based on their features.A process for uncovering hidden patterns and relationships in data.A technique for reducing the dimensionality of data.A method for quantifying the association between variables.30s
- Q6What is the purpose of feature selection in data mining?To identify the most relevant and informative features for modeling and analysis.To cleanse and preprocess the data for analysis.To cluster similar data points together.To visualize and explore patterns in the data.30s
- Q7What is the difference between supervised and unsupervised learning?Supervised learning requires labeled data, while unsupervised learning does not.Supervised learning uses neural networks, while unsupervised learning uses decision trees.Supervised learning is used for image recognition, while unsupervised learning is used for natural language processing.Supervised learning works with continuous data, while unsupervised learning works with categorical data.30s
- Q8What is the purpose of data preprocessing in data mining?To train machine learning models.To extract patterns and knowledge from the data.To visualize and explore the data.To prepare the data for further analysis and modeling.30s
- Q9What is the purpose of data sampling in data mining?To apply statistical tests and validate hypotheses.To visualize the data and identify patterns.To preprocess the data and handle missing values.To select a representative subset of the data for analysis.30s
- Q10What is the difference between data mining and machine learning?Data mining involves supervised learning, while machine learning involves unsupervised learning.Data mining is a process for organizing and storing data, while machine learning is a technique for visualizing data.Data mining focuses on extracting useful patterns and knowledge from large datasets, while machine learning focuses on developing algorithms that can learn and make predictions from data.Data mining is used for text mining, while machine learning is used for image recognition.30s
- Q11What is clustering in data mining?Analyzing data to predict future outcomesGrouping similar objects together based on their characteristicsFinding interesting relationships or patterns among a set of items in large datasetsIdentifying outliers or anomalies in data30s
- Q12What is the purpose of data cleaning in data mining?Analyzing data to predict future outcomesIdentifying patterns in dataRemoving irrelevant, incomplete, or inaccurate data to improve data qualityBreaking down data into smaller subsets30s
- Q13What is the process of data transformation in data mining?Analyzing data to predict future outcomesIdentifying outliers or anomalies in dataConverting raw data into a suitable format for analysis and miningGrouping similar objects together based on their characteristics30s
- Q14What is the purpose of data discretization in data mining?To identify outliers or anomalies in dataTo group similar objects based on their characteristicsTo analyze data and predict future outcomesTo transform continuous data into categorical form for analysis30s