Question
1
In association analysis, confidence
measures certainty of the rule.
Select one:
True
False
Feedback
The correct answer is 'True'.
Question
2
An image recognition system
identifies 4 books out of which only 2 are actually books. Actually, there were
a total of 8 books in the image. The F1-score of the system is:
Select one:
0.67
0.25
0.5
0.33
Feedback
The correct answer is: 0.33
Question
3
The entropy of a fair coin toss is:
Select one:
0.5
0
0.25
1
Feedback
The correct answer is: 1
Question
4
Analysis of patterns for stock
market prediction is an example of:
Select one:
characterization
and discrimination
correlation
outlier
analysis
evolution
analysis
Feedback
The correct answer is: evolution
analysis
Question
5
In classification, we evaluate the
performance of a classifier on training data
Select one:
True
False
Feedback
The correct answer is 'False'.
Question
6
A quiz question had names of 6
algorithms of which the student had to select only the classification
algorithms. A student identified 3 of them as classification algorithms. During
evaluation it was found that 2 of the algorithms identified by the student were
indeed classification algorithms. The student was unable to identify 2 other
classification algorithms in the list.
The recall is:
Select one:
0.60
0.50
0.33
0.73
Feedback
The correct answer is: 0.50
Question
7
MostFrequent - to find the most
frequently occuring sample in the set.
MostFrequent is an example of:
Select one:
holistic
measure
distributive
measure
algebraic
measure
none
of the measures
Feedback
The correct answer is: holistic
measure
Question
8
Given the following frequent
itemsets. Assuming these are the only available 2,3, and 4-itemsets:
{AB}, {BC}, {AC}, {ABC}, {ABCD},
{ABD}, {BCD}, {ACD}
We can be certain that the itemset
{ABD} is:
Select one:
closed
neither
maximal nor closed
maximal
not
maximal
Feedback
The correct answer is: not maximal
Question
9
A boxplot can show outliers as small
circles/points,
Select one:
True
False
Feedback
The correct answer is 'True'.
Question
10
A decision tree is split on the
attribute with highest Gini Index.
Select one:
True
False
Feedback
The correct answer is 'False'.
Question
11
A quiz question had names of 10
algorithms of which the student had to select only the classification
algorithms. A student identified 7 of them as classification algorithms. During
evaluation it was found that 5 of the algorithms identified by the student were
indeed classification algorithms. The student was unable to identify 4 other
classification algorithms in the list.
The precision is:
Select one:
0.59
0.49
0.71
0.69
Feedback
The correct answer is: 0.71
Question
12
The following data is about a poll
that occurred in 3 states. In state1, 50% of voters support Party1, in state2,
60% of the voters support Party1, and in state3, 35% of the voters support
Party1. Of the total population of the three states, 40% live in state1, 25%
live in state2, and 35% live in state3. Given that a voter supports Party1,
what is the probability that he lives in state2?
Select one:
0.62
0.42
0.52
0.32
Feedback
The correct answer is: 0.32
Question
13
10, 2, 3, 4, 5, 3, 4, 6, 2
How many modes are there?
Select one:
a.
4
b.
1
c.
2
d.
3
Feedback
The correct answer is: 3
Question
14
A boxplot is nothing but a visual
representation of IQR
Select one:
True
False
Feedback
The correct answer is 'False'.
Question
15
Given the following two sentences
(which are same):
this is quiz 1.
this is quiz 1.
The cosine similarity between the two is:
this is quiz 1.
this is quiz 1.
The cosine similarity between the two is:
Select one:
0
need
more data
1
0.5
Feedback
The correct answer is: 1
Question
16
Number of groups is known apriori
in:
Select one:
clustering
preprocessing
outlier
classification
Feedback
The correct answer is:
classification
Question
17
Two sentences with no matching word
will have a cosine similarity of 1.
Select one:
True
False
Feedback
The correct answer is 'False'.
Question
18
50th percentile is same as
Select one:
weighted
mean
median
mean
midrange
Feedback
The correct answer is: median
Question
19
Holistic measure can be derived from
distributive measures
Select one:
True
False
Feedback
The correct answer is 'False'.
Question
20
Decision tree splitting decision can
be made based upon information gain of the attributes, but not based upon
entropy of the attributes.
Select one:
True
False
Feedback
The correct answer is 'False'.
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