To create effective dashboards, it is recommended:

Using as many interactive elements as possible

Including as much information as possible to better transmit the message.

Including stylized elements in graphics.

Which of the principles below cannot be applied to the creation of a dashboard:

Guiding the attention to important items in the view

Including filters that can only be used by the dashboard creator, not the user.

Using a compact design for the dashboard

One of the best practices in creating dashboards is:

Keeping dashboard information up-to-date

Include tables of information

Use of 3D graphics and stylized elements

What is the goal of Cluster analysis?

Create linear combinations of starting variables

Putting together statistical units according to common characteristics

Reduce the number of variables to explain a phenomenon

What kind of variables can be used in Cluster analysis?

Only qualitative

Only quantitative

Qualitative and quantitative

The distance matrix:

It has on the largest diagonal all 1

It has on the diagonal greater negative values

It has on the greater diagonal all 0

What is the goal of Correspondence Analysis?

Maximize explained inertia

Maximize explained variability

Minimize explained inertia

Correspondence analysis works on:

Correlation tables

Simple deployments

Contingency tables

Why is the chi-square test carried out?

To check if variables are quantitative

To analyze the existence of interdependence between the two variables COU_04 Cluster analysis

To check if variables are qualitative

The goal of the is PCA:

The description of a dataset

The aggregation of statistical units according to their distance

The reduction of the dimensionality of a complex phenomenon

The matrix of starting data of an ACP must be

With quantitative data

With qualitative data

With standardized data

The components extracted in the Analysis in Principal Components:

They have all eigenvalues > 1

They have the equidistributive property

They are linear combinations of the starting variables

Which of the following is not an element of good data-driven news'?

Storyboard

Conflict

Interactivity

Can visualisation techniques replace the role of narration in a given story?

No, indeed visualisation techniques are superfluous.

Yes, visualisation gives an accurate picture of the situation at a given time and is sufficient to explain the data.

No, visualisation of data does not guarantee sufficient presentation of a context in which to place it.

How is the data story more effective than the mere presentation of the results of data analysis?

Because listening to a story activates parts of our brain linked to emotions.

Both of the above

Because the story is structured in such a way that information is more easily remembered.