SA Technologies Machincal Mantinace Interview Questions and Answers

Focus more on python funda,ental and spark

They will ask more on datarbcisk related stuff

It was 1 hour coding test with 2 questions. One was easy and another was medium level coding question.

Q1. Few SQL Queries
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Q2. Explain null hypothesis and p-value in terms of probability
Ans. 
Null hypothesis is a statement that assumes no relationship or difference between variables. P-value is the probability of obtaining results as extreme as the observed data, assuming the null hypothesis is true.
• Null hypothesis is a statement that assumes no effect or relationship between variables

• P-value is the probability of obtaining results as extreme as the observed data, assuming the null hypothesis is true

• Null hy...read more
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Q3. Explain Linear and Logistic Regression
Ans. 
Linear regression is used for predicting continuous numerical values, while logistic regression is used for predicting binary categorical values.
• Linear regression models the relationship between a dependent variable and one or more independent variables using a linear equation.

• Logistic regression models the probability of a binary outcome using a logistic function.

• Linear regression is used for tasks like predicting hou...read more
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4 technical questions, 1 python code, 2 SQL, 1 Spark