Question $11$ pts

In a dataset, if we want to apply PCA algorithm, it is necessary to have a target value.

Group of answer choices

True

False

Flag question: Question $2$

Question $21$ pts

In a dataset, if all the variances in all directions, are the same, we can still reduce the dimensionality with PCA.

Group of answer choices

True

False

Flag question: Question $3$

Question $31$ pts

We have a one dimensional dataset: each data point has only one feature. If

and the closest data point in the dataset is

$,$ select all the values that can be added to the dataset using SMOTE technique.

Group of answer choices

$6\mathrm{.}5$

$4\mathrm{.}9$

$5\mathrm{.}5$

$5\mathrm{.}95$

$6\mathrm{.}1$

$5\mathrm{.}15$

Flag question: Question $4$

Question $41$ pts

Data augmentation always results in data imbalance.

Group of answer choices

True

False