1
In pixel-oriented visualization, each data value is represented by
Correct Answer
a single coloured pixel
☑ MCQ PRACTICE
Data Analytics Unit 5
Practice objective questions for quick revision and examination preparation. Try answering each question before revealing the answer.
Data Analytics - Unit-5
2
In pixel-oriented techniques, the colour of a pixel usually shows
Correct Answer
the value of the data item
3
Pixel-oriented techniques are suited to large data sets because they
Correct Answer
can display as many data items as there are pixels on the screen
4
The recursive pattern technique belongs to which group?
Correct Answer
Pixel-oriented visualization
5
Geometric projection techniques
Correct Answer
project multidimensional data onto a two-dimensional display
6
A scatter plot matrix is an example of
Correct Answer
geometric projection visualization
7
In parallel coordinates, each dimension is drawn as
Correct Answer
a parallel vertical axis
8
Chernoff faces are an example of
Correct Answer
icon-based visualization
9
In Chernoff faces, data dimensions are mapped to
Correct Answer
facial features such as eyes, nose and mouth
10
Stick figures are an example of
Correct Answer
icon-based visualization
11
A treemap is an example of
Correct Answer
hierarchical visualization
12
A treemap represents hierarchical data using
Correct Answer
nested rectangles whose area reflects the value
13
Worlds-within-Worlds (n-Vision) is a technique for
Correct Answer
hierarchical visualization
14
Cone trees display hierarchies using
Correct Answer
three-dimensional cones
15
Hierarchical visualization techniques partition the dimensions into
Correct Answer
subsets that are visualized in a hierarchical manner
16
A heat map uses
Correct Answer
colours to represent the values in a matrix
17
Which chart is best for showing the distribution of a single numeric variable?
Correct Answer
Histogram
18
A box plot displays
Correct Answer
the median, quartiles and outliers of a data set
19
A scatter plot is used to show
Correct Answer
the relationship between two numeric variables
20
A line chart is best suited for showing
Correct Answer
trends over time
21
A pie chart is used to show
Correct Answer
the proportions of a whole
22
Complex relations such as social networks are commonly visualized with
Correct Answer
node-link diagrams
23
A tag (word) cloud is used to visualize
Correct Answer
the frequency of words in text data
24
A dashboard is
Correct Answer
a collection of visualizations displayed together on one screen
25
Which of the following is a popular data visualization tool?
Correct Answer
Tableau
Fill in the Blanks
26
In __________-oriented visualization each data value is shown as a coloured pixel.
Correct Answer
pixel
27
Scatter plot matrices and parallel coordinates are __________ projection techniques.
Correct Answer
geometric
28
Chernoff __________ map data dimensions to facial features.
Correct Answer
faces
29
A __________ displays hierarchical data as nested rectangles.
Correct Answer
treemap
30
In __________ coordinates, every dimension is drawn as a parallel vertical axis.
Correct Answer
parallel
31
Chernoff faces and stick figures are __________-based visualization techniques.
Correct Answer
icon
32
A __________ map uses colours to show the values of a matrix.
Correct Answer
heat
33
A __________ plot shows the median, quartiles and outliers of a data set.
Correct Answer
box
34
A __________ shows the distribution of a numeric variable using bars.
Correct Answer
histogram
35
A __________ chart is best for showing trends over time.
Correct Answer
line
36
A pie chart shows the __________ of a whole.
Correct Answer
proportions
37
Network data are commonly shown with node-__________ diagrams.
Correct Answer
link
38
Cone __________ display hierarchies in three dimensions.
Correct Answer
trees
39
A __________ brings several visualizations together on one screen.
Correct Answer
dashboard
40
A __________ cloud shows how frequently words occur in text.
Correct Answer
word