Data Science MCQ Questions and Answers for Practice

1. Which of the following is most important language for Data Science ?

1. R
2. Python
3. Java
4. Ruby

2. Which of the following approach should be used to ask Data Analysis question ?

1. Data Replication
2. All of the Mentioned
3. Data Cleansing
4. Data Integration

3. Which is the correct statement:

1. Data wrangling
2. Machine Learning
3. Data mining
4. Big Data

4. Which of the following uses data on some object to predict values for other object ?

1. Scalable
2. All of the Mentioned
3. Fast
4. Accuracy

5. Which of the following is common goal of statistical modelling ?

1. Find out answer from dataset without asking question
2. None of the mentioned
3. Find only one solution for particular problem
4. Find out the question which is to be answered

6. Which of the following model is usually gold standard for data analysis ?

1. Subsetting
2. None of the Mentioned
3. Inference
4. Summarizing

7. Which of the following model model include a backwards elimination feature selection routine?

1. Predictive
2. None of the Mentioned
3. Inferential
4. Exploratory

8. Which of the following is a categorical outcome?

1. Causal
2. All of the Mentioned
3. Inferential
4. Descriptive

9. Which of the following can be used to impute data sets based only on information in the training set ?

1. Causal
2. Mechanistic
3. Inferential
4. Exploratory

10. Which of the following analysis is usually modeled by deterministic set of equations ?

1. MCRS
2. All of the Mentioned
3. MCV
4. MARS

11. Which of the following analysis are incredibly hard to infer ?

1. process
2. All of the Mentioned
3. postProcess
4. preProcess

12. Which of the following is characteristic of best machine learning method ?

1. Mechanistic
2. All of the mentioned
3. Predictive
4. Causal

13. Which of the following characteristic of big data is relatively more concerned to data science ?

1. Raw data is the data obtained after processing steps
2. None of the Mentioned
3. Raw data is original source of data
4. Preprocessed data is original source of data

14. Which of the following step is performed by data scientist after acquiring the data ?

1. Accuracy
2. All of the Mentioned
3. RMSE
4. RSquared

15. Which of the following focuses on the discovery of (previously) unknown properties on the data ?

1. Volume
2. None of the Mentioned
3. Velocity
4. Variety