Question 1:- Which function checks for sample adequacy in PCA? a) psych b) KMO c) e.values d) fa Question 2:- Which argument specifies number of factors in PCA? a) nfactor b) n c) nfactors d) principal Question 3:- Which function is used to find communalities in PCA? a) communaliity b) communalities c) comm d) communality Question 4:- Which package is used for PCA? a) psych b) rattle c) rpart d) lm Question 5:- Which function is used to find factor loadings in PCA? a) loading b) loadings c) load d) components Question 6:- Which function is used to create distance matrix in Clustering? a) distance / |
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dist
euc euclidean
Question 7:- Which method is used to create similarity matrix?
Euclidean
Pythogras
Scale
Distance
Question 8:- Which graph is helpful in cluster analysis?
Box Plot
Heat Map
Dendogram
Histogram
Question 9:- Which function is used in cluster analysis?
hclust str
layers minsplit
Question 10:- In ANN which process is used to scale variables?
Standardization
Normalization
Scaling
All of the above
Question 11:- Which function is used to scale variables in Cluster Analysis?
scale scaled
scaling scales
Question 12:- Which argument specifies size of training and testing dataset?
prob c
set.seed replace
Question 13:- Which function in Text Analytics is used to generate word cloud?
RColorBrewer snowballc
tm
wordcloud
Question 14:- Which function in Text Analytics is used to import text document in R?
Corpus readLines Read tm
Question 15:- CART decision tree is used to predict:
Continuous variable
Categorical variable
Both continuous and categorical
None of the above
Question 16:- Function to draw best fit line in Time series data:
ols() abline()
lm() glm()
Question 17:- Package used in Text mining to remove unwanted characters:
ggplot2 snowballc
tm wordcloud
Question 18:- The package needed to import spss file in R is:
stats foreign
xlsx statistics
Question 19:- In PCA which plot gives optimum number of components?
pie chart bar plot
histogram scree plot
Question 20:- Univariate time series is represented by class:
ts mts
tp
mtp
Case Study
Download the data set data.csv. Make the CART model in R and answer the following questions:
Question 21:- Which is the most significant variable in predicting delinquency?
|
a) age b) gender c) FICO d) term Question 22:- Which function in R is used to import data? a) read.txt b) read.csv c) read.delimited d) import Question 23:- What is the data type of variable term? a) integer b) numeric c) factor d) string Question 24:- How many missing values are their in data? a) Nil b) 2 c) 3 d) 4 Question 25:- How many rules are their in the tree which makes a customer delinquent? a) 1 b) 3 c) 2 d) 4 |
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