What is the primary goal of "data annotation" in data visualization?

Certain number of children were playing a game of football. There was a trial taking place on the field. In this trial the probability that a goal is scored is 2/5. The probability that a girl hits a goal is 7/10 whereas the probability that a boy hits a goal is 1/5. What will be the probability that not only a goal is hit but it is also hit by a boy?

A

14/50

B

7/50

C

2/5

D

2/25

Certain numbers of children were playing a game of football. There was a trial taking place on the field. In this trial the probability that a goal is scored is 2/5. The probability that a gril hits a goal is 7/10 whereas the probability than a boy hits a goal is 1/5. What will be the probability that not only a goal is hit but it is also hit by a boy?

A

14/50

B

7/50

C

2/5

D

2/25

What is the primary goal of "data storytelling" in data visualization?

A

To convey a narrative with data

B

To make charts more colorful

C

To add chartjunk

D

To slow down data analysis

What is the primary goal of "data mining" in data visualization and reporting?

A

Discover patterns and insights

B

Add chartjunk

C

Ignore data cleaning

D

Speed up data analysis

What is the primary goal of storytelling in data visualization?

A

To engage and inform the audience

B

To add chartjunk

C

To make the chart more complex

D

To slow down data analysis

Which of the following statements are true?
Statement I Big data refers to no precise quantity, but generally refers to data in the range of Petabytes and Exabyte, i.e. billions to trillions of records, all from various sources. Big data is generated much faster. than traditional data in much larger quantities.
Statement II Big data interests industries because they are able to learn more patterns and curious variances than smaller data sets, with the capability to provide valuable insights into consumer behaviour, weather systems, financial market activity, or other phenomena.
Statement III Various departments and product lines use various applications within most organisations and store data in separate datasets. These separate databases may contain similar data, but data from one data base to another is not always consistent. This is called data silo.

A

Both statements I and II

B

Both statements II and III

C

Both statements I and III

D

All of the above

In data visualization, what does "annotation" refer to?

A

Adding notes or labels to a chart

B

Cleaning the dataset

C

Choosing a color palette

D

Data summarization

Arjun is the captain of his football team and the goal keeper is 4 years older than Arjun. If average age of the whole team is 2 year greater than the average age of remaining team players (excluding captain and goal keeper) that is 22, find the age of captain and goal keeper.

A

29, 33

B

31, 35

C

27, 31

D

33, 37

What is the primary purpose of data visualization in data science?

A

Summarizing data

B

Communicating insights

C

Cleaning data

D

Storing data

In Data Science, what is the primary purpose of data visualization?

A

To make data more confusing

B

To obscure patterns in data

C

To help communicate insights from data

D

To complicate data

What is the primary goal of "data annotation" in data visualization?

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