QUESTIONS AND ANSWERS |
100% PASS
What is included in the data mining approach of data exploration and
reduction? - ANSWER ✔✔identifying groups in which the elements of
the groups are in some way similar
What formula calculates the Euclidean distance between X and Y? -
ANSWER ✔✔SQRT((x1-y1)^2+(x2-y2)^2+(xn-yn)^2)
What is true of cluster analysis? - ANSWER ✔✔It does not provide a
definitive answer from analyzing the data.
, What is true of hierarchical clustering? - ANSWER ✔✔The data are
not partitioned into a particular cluster in a single step.
In the average linkage clustering, the distance between two clusters is
defined as the average of distances between all pairs of objects, where
each pair is made up of one object from each group. - ANSWER
✔✔True
In what method is the distance between groups defined as the distance
between the closest pair of objects, where only pairs consisting of one
object from each group are considered? - ANSWER ✔✔single
linkage clustering
What is the distance between two clusters in a complete linkage
clustering? - ANSWER ✔✔the distance between the most distant pair
of objects, one from each group
What is the first stage of joining clusters in agglomerative hierarchical
clustering? - ANSWER ✔✔Joining two clusters that are closest to
each other
What is true of divisive clustering methods that makes them different
from agglomerative clustering methods? - ANSWER ✔✔They
separate n objects successively into finer groupings