In this practical we are going to play around with the different types of elements in R.
vec1
with values 1 through 6 and one named vec2
with letters A through F. vec1
and one from vec2
. The dimensions for both matrices are 3 rows by 2 columns. vec1
and vec2
with 6 rows and 2 columns. Inspect this matrix.dat3
where vec1
and vec2
are both columns. Name the columns V1
and V2
, respectively. Use function data.frame()
.dat3b
where vec1
and vec2
are both columns. Name the columns V1
and V2
, respectively. Use function as.data.frame()
on the matrix obtained from Question 4
. dat3
that you have created in Question 4. V1
in our dataframe dat3
is not coded correctly, but actually represents grouping information about cities. Convert the variable to a factor and add the labels Utrecht, New York, London, Singapore, Rome and Cape Town.boys.RData
. You need to download this file and put it in the project folder.boys
dataset (it is from package mice
, by the way) by typing boys
in the console, and subsequently by using the function View()
. boys
data set and inspect the first and final 6 cases in the data set. boys
data are sorted based on age
. Verify this.boys
dataset with str()
. Use one or more functions to find distributional summary information (at least information about the minimum, the maximum, the mean and the median) for all of the variables. Give the standard deviation for age
and bmi
. Tip: make use of the help (?) and help search (??) functionality in R
.north
?End of practical