R_final

Which function is used to find average value in R?

• ave()

• average()

• mean()

• sum()

What is the purpose of using head(x)?

• Returns first 6 values of x

• Returns all values of x

• Returns last 6 values of x

• Returns first value of x

All the basic statistical information can be seen using the command_____

• summary()

• plot()

• view()

• disp()

Which command will produce histogram for the data set x?

• hist(x)

• Hist(x)

• histogram(x)

• histo(x)

Which of the following is used to show frequency of categorical data?

• Scatterplot

• Bar Chart

• Histogram

• Line graph

What is the output of

a=c(1,2,NA)

sum(a)

• 3

• 0

• NA

• [ ]

What is the output of

a=c(0,1,2,-1,-2)

as.logical(a)

• FALSE TRUE TRUE TRUE TRUE

• FALSE TRUE TRUE FALSE FALSE

• FALSE TRUE FALSE FALSE FALSE

8. Which of the following is the plotting character?

• Sch

• Pch

• Grd

• Pck

________ is used for main title in graph.

• Title

• Main

• Title Main

• Main Title

Which command is used to change size of label

• axis.size()

• cex.lab()

• label.size()