R Language quiz questions

What is the difference between rnorm and runif functions ?

Answer:

rnorm function generates "n" normal random numbers based on the mean and standard deviation arguments passed to the function.

Syntax of rnorm function -

rnorm(n, mean = , sd = ) 

runif function generates "n" unform random numbers in the interval of minimum and maximum values passed to the function.

Syntax of runif function -

 runif(n, min = , max = )

_________ uniforms and customizes plots of packages ggplot2, graphics and lattice.

1. uniCox

2. uniPlot

3. unknownR

4. None of the mentioned

______ is used for Visualisation, verification and calibration of ternary probabilistic forecasts.

1. TOSS

2. termstrc

3. ternvis

4. All of the mentioned

Which of the following package contains functions for reading and displaying satellite data for oceanographic applications with R ?

1. saves

2. satin

3. saws

4. All of the mentioned

__________ is used for the analysis of air pollution data.

1. air

2. openair

3. opena

4. All of the mentioned

Which of the following is used to analyze paleontological time-series ?

1. accelerometry

2. parfossil

3. paleoTS

4. All of the mentioned

Which of the following package provide namespace management functions not yet present in base R ?

1. stringr

2. namespace

3. nbpMatching

4. All of the mentioned

________ performs class prediction based on microarray data and clinical parameters

1. M3

2. M2

3. MAclinical

4. All of the mentioned

________ is a package for parsing, applying, and manipulating data cleaning rules

1. EDR

2. editrules

3. edrGraphicalTools

4. All of the mentioned

______ finds K best paths in a given graph.

1. kBestShortestPaths

2. kcirt

3. ktrees

4. All of the mentioned

______ Uses Grieg-Smith method on 2 dimensional spatial data

1. G.S.

2. g.data

3. G1DBN

4. All of the mentioned

_________ searches for significant clusters in genetic data.

1. BayesCount

2. BayesComm

3. bayesclust

4. None of the mentioned

______ specializes in functions for analytical Customer Relationship Management.

1. adagio

2. ada

3. aCRM

4. All of the mentioned

Which of the following is an R package for the exploratory analysis of genetic and genomic data ?

1. adeg

2. adegenet

3. anc

4. All of the mentioned

__________ is used for selecting regression transformations

1. gac()

2. gpl()

3. avas()

4. All of the mentioned

Which of the following contains functions for processing uniaxial minute-to-minute accelerometer data ?

1. accelerometry

2. abc

3. accrued

4. All of the mentioned

Which of the following package combine multi-dimensional arrays ?

1. stringr

2. comb

3. abind

4. All of the mentioned

________ contains tools for Approximate Bayesian Computation (ABC).

1. str

2. abc

3. zyz

4. All of the mentioned

________ is used to view packages currently loaded.

1. library()

2. search()

3. .libPaths()

4. All of the mentioned

______ is used to get library location in R.

1. library()

2. search()

3. .libPaths()

4. All of the mentioned