Data Science

Which of the following is performed by Data Scientist ?

• Define the question

• Create reproducible code

• Challenge results

• All of the Mentioned

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

• Find only one solution for particular problem

• Find out the question which is to be answered

• Find out answer from dataset without asking question

• None of the mentioned

Which of the following is one of the key data science skill ?

• Statistics

• Machine Learning

• Data Visualization

• All of the Mentioned

Point out the correct statement:

• Raw data is original source of data

• Preprocessed data is original source of data

• Raw data is the data obtained after processing steps

• None of the Mentioned

Which of the following is the top most important thing in data science ?

• answer

• question

• data

• none of the Mentioned

Which of the following term is appropriate to the above figure ?

• Large Data

• Big Data

• Dark Data

• None of the mentioned

Q1. Which of the following is the most accurate definition of data science?

• a) Data science is extracting meaning from large data sets in order to provide insights to support decision-making

• b) Data science is using computers to analyse data and to perform calculations on the data to produce information

• c) Data science is performing experiments and recording the data produced by those experiments

• d) Data science is writing code to make sure that any inaccuracies in data sets are spotted and removed (cleaned)

Q2. Which of the following best describes a data visualisation?

• A. Presenting related data so that a user can see individual items of data

• B. Making sure that data is accessible and that no data is hidden

• C. A visual representation that communicates relationships among the data

• D. A collection of graphs that tell a story when put together

Q4. What is meant by a correlation?

• A. The relationship between two or more variables

• B. When there is an upward trend in a graph

• C. When there is a set of data that doesn’t lie in the normal or expected range

• D. When data is placed in a graph

Q6. The following graph shows the annual average temperatures recorded by a weather station over a period of 20 years. Identify the outlier in the data.

• A. Point A

• B. Point B

• C. Point C

• D. Point D