BA06 Advanced Analytics Using R

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Assignment. Be sure that you have reviewed your answers before clicking it. Attempt all the questions. All questions are compulsory. Each question carries 4 marks. There is No Negative Marking for wrong answer/s.

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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