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Showing posts with the label Data Engineering

What is a hypothesis and its types?

 A hypothesis is a statement that can be tested through scientific research, representing a proposed explanation for a phenomenon or a prediction about relationships between variables. There are several types of hypotheses, each with a distinct purpose and use. Below is the outline of the major types of hypotheses in detail: 1. Null Hypothesis (H₀) The Null Hypothesis states that there is no effect or no relationship between the variables being studied. It is used to test whether any observed effects in a study are due to chance. Purpose : The null hypothesis serves as a starting point for testing and provides a benchmark against which the actual outcomes are compared. Example : In a study testing a new drug, the null hypothesis might state that "There is no difference in the effectiveness of the new drug compared to a placebo." 2. Alternative Hypothesis (H₁ or Hₐ) The Alternative Hypothesis states that there is an effect or a relationship between the variables. It is what

What is Data Ecosystem?

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In the broader data ecosystem , Data Science is interconnected with several related fields, each contributing to or benefiting from the insights and methods developed within Data Science. These topics form an integrated system that enhances data-driven decision-making and technological advancements. Below are key areas linked with Data Science: 1. Big Data Description : Refers to extremely large datasets that are challenging to process using traditional methods due to their volume, velocity, variety, and veracity (4 V’s). Link to Data Science : Data science methods, such as machine learning and statistical analysis, are applied to extract insights from Big Data. Technologies like Hadoop, Apache Spark, and distributed databases help manage and process this data. Application : Real-time analytics, fraud detection, personalization in e-commerce, social media analysis. 2. Artificial Intelligence (AI) Description : The simulation of human intelligence processes by machines, particularly com