Answer: b. My name is BobBob
Explanation:
- $foo = 'Bob'; // Assigns foo variable the value Bob
- $bar = $foo; // Assigns the value of foo to bar
- $bar = "My name is $bar"; //changes the $bar this is the way to include variables directly in the string.
- print $bar; // this prints My name is and moves to the variable $bar which prints the value of $bar which is the value of $foo i.e. Bob
- print $foo; // prints another Bob
Answer:
Option D: NOW
Explanation:
In Microsoft Excel, NOW function can be used to return a serial number that corresponds to the system date and time beginning with December 31, 1899.
The NOW function is useful when a date and time is required for calculation or display. The value will be updated each time we open the Excel worksheet. To use the NOW function, we can type in the formula as follows:
<em>=NOW() </em>
Use the function varimp() on the output of train() and save it to an object called imp object.
<h3>What is the classification that has More than Two Classes and the Caret Package</h3>
In the Classification that has More than Two Classes and the Caret Package section, one need to use the methods that can be able to adapt to higher forms or dimensions and through a lot of different machine learning algorithms.
Note that varImp is seen as a generic method for calculating variable .
Hence, Use the function varimp() on the output of train() and save it to an object called imp object.
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Answer:
d.) black-box testing
Explanation:
Software testing can be regarded as procedures/process engage in the verification of a system, it helps in detection of failure in the software, then after knowing the defect , then it can be corrected. Black Box Testing can be regarded as a type of software testing method whereby internal structure as well as design of the item under test is not known by one testing it. In this testing internal structure of code/ program is unknown when testing the software, it is very useful in checking functionality of a particular application. Some of the black box testing techniques commonly used are; Equivalence Partitioning, Cause effect graphing as well as Boundary value analysis. It should be noted that the purpose of black-box testing is to isolate the behavior of a given component of software.
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