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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

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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