BA06 Advanced Analytics Using R

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Please note: There are 25 questions out of which Q.No.21-25 are based on the Case Study.

Subject Code: BA06

Subject Name:

ADVANCED ANALYTICS

USING R (PREDICTIVE

MODELING)

Component name: TERM

END

SAVE ASSIGNMENT

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

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

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

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

hihi

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