woosat What is the vertical distance between pump and water surface? A. 5.0 mB. 7.5 mC. 10.0 mD. 12.5 m Heart of homogenizer is known as A. PumpB. VibratorC. PistonD. None of the above Slip is defined as A. S = 1 – (Va/Vt)B. S = 1 + (Vt/VA)C. S = (Va/Vt) – 1D. S = … Read more
What is the process of extracting patterns and information from data called? A. Data WranglingB. Data VisualizationC. Data EngineeringD. Data Mining Which statistical measure represents the middle value of a dataset when it is sorted in ascending order? A. MedianB. MeanC. Standard DeviationD. Mode In Data Science, what is the purpose of feature engineering? A. … Read more
What is the process of converting text data into a numerical format so that it can be used in machine learning algorithms called? A. Data EncodingB. Data TokenizationC. Data ParsingD. Data Transformation Which data collection method involves selecting a sample from a larger population and collecting data from the sample only? A. ExperimentsB. Observational StudiesC. … Read more
What is the primary purpose of a bar chart in EDA? A. To visualize the distribution of dataB. To display relationships between variablesC. To compare multiple categoriesD. To identify missing values Which EDA technique is used to visualize the distribution of a single continuous variable? A. Box PlotB. HistogramC. Scatter PlotD. Bar Chart In EDA, … Read more
In data modeling, what is the term for the process of representing data as objects and their interactions in software applications? A. Hierarchical ModelingB. Relational ModelingC. Object-Oriented ModelingD. Entity-Relationship Modeling What is the primary purpose of a decision tree model in data modeling? A. To represent the structure of a databaseB. To predict outcomesC. To … Read more
Which machine learning algorithm is commonly used for image classification tasks and is based on convolutional neural networks (CNNs)? A. Decision TreeB. Naive BayesC. K-Means ClusteringD. Convolutional Neural Network (CNN) In machine learning, what is the term for the process of dividing a dataset into a training set and a testing set for model evaluation? … Read more
In model evaluation, what is the primary purpose of a learning curve? A. To compare different machine learning algorithmsB. To visualize the model’s decision boundaryC. To measure the model’s prediction accuracyD. To assess the model’s performance over time Which metric is used to evaluate the performance of a regression model when you want to know … Read more
What is the primary role of a “Data Node” in the Hadoop Distributed File System (HDFS)? A. Storing metadataB. Managing job schedulingC. Storing and managing data blocksD. Managing data visualization Which Apache project provides a distributed, scalable, and highly available database for big data storage and processing? A. Apache KafkaB. Apache HBaseC. Apache SparkD. Apache … Read more
What is the primary use of a “corpus” in Natural Language Processing (NLP)? A. To perform machine translationB. To store and analyze a collection of textsC. To identify the sentiment of a textD. To generate random text Which NLP technique involves assigning a numerical value to each word in a document, typically representing word frequency … Read more
What is the primary purpose of “lagging” in time series analysis? A. To identify seasonality in the dataB. To remove outliers from the dataC. To add noise to the dataD. To identify trends in the data In time series analysis, what is the “autoregressive” (AR) order in an ARIMA model? A. The order of differencingB. … Read more