Exercise 1-4 | head(): Look up the first entries in variables

head(): Look up the first entries in variables

  head()  and  tail() returns the first or last parts of a vector, matrix, table, data frame or function.  Since head() and  tail() are generic functions, they may also have been extended to other classes.

Instruction

Print the first six entries in iris dataset using head() function.
Print the last six entries in iris dataset using tail() function.


# Print all values 'iris'.
print(iris)

# Use head function to see the first six entries in iris dataset. 


# Use tail function to see the last six entries in iris dataset.


# Print all values 'iris'.
print(iris)

# Use head function to see the first six entries in iris dataset. 
head(iris)

# Use tail function to see the last six entries in iris dataset. 
tail(iris)



test_function("head")
test_function("tail")

success_msg("Great! Head over to the next exercise.")

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