Data Mining And Knowledge Discovery

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1. Association rules describe the relationships between certain variables in a large database.

Explanation

Association rules are used in data mining to discover relationships or patterns between variables in a large database. These rules help to identify the co-occurrence or dependencies between different items or attributes. By analyzing the data, association rules can provide insights into the relationships and associations that exist within the dataset. Therefore, the statement "Association rules describe the relationships between certain variables in a large database" is true.

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Data Quizzes & Trivia

Explore key concepts in Data Mining and Knowledge Discovery with questions on data partitioning, CRISP DM phases, SAS Enterprise Miner, and more. This quiz assesses skills in predictive... see moremodeling and market basket analysis, vital for professionals in data-driven roles. see less

2. When discovering association rules; it is most important to look for rules that generate: 

Explanation

When discovering association rules, it is most important to look for rules that have high support and confidence as well as great lift. Support measures the frequency of the rule in the dataset, confidence measures the reliability of the rule, and lift measures the strength of association between items. Therefore, rules with high support and confidence indicate that they are frequently occurring and reliable, while great lift indicates a strong association between the items in the rule.

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3. What is the correct order for the 6 CRISP DM phases?

Explanation

The correct order for the 6 CRISP DM phases is as follows: Business Understanding, Data Understanding, Data Preparation, Modeling, Evaluation, Deployment. This order is logical as it starts with understanding the business objectives and requirements, then moves on to gaining a deeper understanding of the available data. Once the data is understood, it can be prepared for analysis. Modeling involves building and testing predictive models, followed by evaluating their effectiveness. Finally, the deployment phase involves implementing the models into the business process.

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4. Dividing a database into 3 parts; a training data set, validation data set and testing data set is known as:

Explanation

Dividing a database into three parts, namely a training data set, validation data set, and testing data set, is known as data partitioning. This process is commonly used in machine learning and data analysis to ensure that the model is trained on a subset of the data, validated on another subset, and tested on a separate subset. This partitioning helps in evaluating the model's performance and generalizability by assessing its accuracy on unseen data.

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5. What is SAS Enterprise Miner used for:

Explanation

SAS Enterprise Miner is a software tool used for creating accurate descriptive and predictive models. It is not limited to just market basket analysis or predictive modeling alone. With SAS Enterprise Miner, users can explore and analyze data, build and validate models, and deploy the models to make predictions and gain insights. The software offers a wide range of data mining and machine learning techniques, making it a versatile tool for creating accurate descriptive and predictive models.

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6. What is Predictive Modeling?

Explanation

Predictive modeling refers to the process of using decision trees to predict certain outcomes. Decision trees are a popular algorithm used in machine learning for classification and regression tasks. By analyzing a dataset and creating a tree-like model of decisions and their possible consequences, predictive modeling can be used to make predictions or forecasts about future events or outcomes based on past data. This approach is widely used in various fields, including finance, marketing, and healthcare, to make informed decisions and optimize business strategies.

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7. In market basket analysis; confidence is:

Explanation

Confidence in market basket analysis refers to the conditional probability that a transaction contains item set B given that it contains item set A. This means that confidence measures the likelihood of item set B being purchased when item set A is already in the basket. It quantifies the strength of the association between the two item sets and helps identify which items are frequently purchased together.

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8. What is Market Basket Analysis?

Explanation

Market Basket Analysis is the process of discovering association rules between variables in a dataset. This technique is commonly used in retail and marketing industries to understand the purchasing patterns of customers. It helps identify relationships between products that are frequently bought together, enabling businesses to make strategic decisions such as product placement, cross-selling, and targeted marketing campaigns. By analyzing the associations between variables, businesses can gain valuable insights into customer behavior and optimize their operations for increased sales and customer satisfaction.

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9. In market basket analysis; support is: The general measure of association between the two item sets.

Explanation

Support is not a measure of association between two item sets in market basket analysis. Support is a measure of how frequently an item set appears in a dataset. It is used to identify the popularity or occurrence of an item set in a transaction dataset. Association between item sets is measured using other metrics like confidence and lift, which determine the strength of the relationship between items in a transaction. Therefore, the statement that support is a measure of association is false.

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10. Which of these is NOT part of the CRISP DM Data Understanding phase?

Explanation

Cleaning and addressing any problems with the data sets is not part of the CRISP DM Data Understanding phase. The Data Understanding phase includes collecting relevant data, finding and identifying any problems within the data sets. Cleaning and addressing data problems are part of the Data Preparation phase, which comes after the Data Understanding phase in the CRISP DM methodology.

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11. What is Data Processing and Analysis?

Explanation

Data processing and analysis refers to the overall method of creating models to address real-world situations. This involves using various techniques and tools to collect, organize, and analyze data in order to gain insights and make informed decisions. It includes processes such as data cleaning, transformation, visualization, and statistical analysis to understand patterns, trends, and relationships within the data. By creating models, researchers and analysts can simulate different scenarios and predict outcomes based on the data, helping to solve real-world problems and improve decision-making processes.

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Association rules describe the relationships between certain variables...
When discovering association rules; it is most important to look for...
What is the correct order for the 6 CRISP DM phases?
Dividing a database into 3 parts; a training data set, validation data...
What is SAS Enterprise Miner used for:
What is Predictive Modeling?
In market basket analysis; confidence is:
What is Market Basket Analysis?
In market basket analysis; support is: The general measure of...
Which of these is NOT part of the CRISP DM Data Understanding...
What is Data Processing and Analysis?
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