Answer:
sample_str = "Help me pass!"
first_chars = sample_str[0:4]
print('First four character: ', first_chars)
Explanation:
sample_str = "Help me pass!"
first_chars = sample_str[0:4]
H has index 0, e has index 1, l has index 2, p has index 3. the space has an index as well, etc.
Answer:
1. t is a function used to transpose a matrix object. The object is passed as an argument to the function.
2. matplot is a graphical function in R used for data visualization.
3. The c function is used to combine arguments.
4. seq is an R function used to derive a range of numbers, optionally specifying a start, stop and step argument or simply a single numeric argument.
5. legends are used in data visualization to list and define items in the graphical presentation.
6. matrix is a function in R used to create and work with matrix and data frame objects.
7. rownames and colnames are functions used to label the row and columns of a data frame in R.
8. The typeof function return the data type of an object.
Explanation:
The R programming language is a dedicated programming language for data analysis and visualization.
USE SOCRACTIC IT WOULD REALLY HELP WITH QUESTIONS LIKE THIS
Answer:
The VLookup checks a value inside a table through matching over the 1st column.
Lookup a value in a table by matching on the first column and the matched value is returned from the table.
Explanation:
The formula for the VLOOKUP is
=VLOOKUP (value to be matched in the first column, table from which the value will be looked for, col_index is the column inside the table from where the value is fetched, [range_lookup] is true for the approximate match, and false for exact match)
Answer
The correct answer is option(C) which is "Index".
Explanation:
Array elements can be differentiated because each element in the array have different index value.In the array all elements are of same data type, so we can not differentiated them on the basis of data type. Also an array can have same value many times, That is why we can not differentiated them on this basis. In the array elements are from any range, so its not possible to distinguish them on range. We can only distinguish elements of an array on their index value because each element have different index in the array.
