Data Handling with R MCQ's

1. Which function can be used when a vector needs to be split into groups defined by a classifying factor, compute a function on the subsets, and return the results?

   View Answer   

   tapply

2. Which function is very similar to lapply?

   View Answer   

   sapply

3. Applying lapply function on a matrix returns

   View Answer   

   list

4. A hospital data contains patient's age and treatment they are undergoing. Which function can be used to find average of patients undergoing each of the treatments?

   View Answer   

   tapply

5. Which function is used over the margins of an array

   View Answer   

   apply

Data Cleansing MCQ's

1. Data munging is

   View Answer   

   A Process to clean messy data

2. Can a technically correct dataset still be incorrect for data analysis?

a) YES
b) NO
   View Answer   

   YES

3. Binning is a method to manage data

   View Answer   

   noisy data

4. Data cleaning is the most time consuming process in data analysis

a) True
b) False
   View Answer   

   True

5. tail() function shows ___ by default

   View Answer   

   6 rows

Linear Algebra MCQ's

1. The set of all possible vectors you can reach with the linear combination of two vectors is called ____________________.

   View Answer   

   Linear Combination

2. If one set of vectors can be expressed as a linear combination of other set of vectors, they are called _____________________.

   View Answer   

   linearly combined

3. Every vector in 2D space is associated with multiple pairs of number.

a) True
b) False
   View Answer   

   False

Maven -Coalescing Pipeline MCQ's

1. How can we compile and generate war file using single command

   View Answer   

   mvn compile war:war

2. Syntax to create maven project.

   View Answer   

   mvn archtype:generate

3. How to generate war file

   View Answer   

   mvn package

4. War files are created for

   View Answer   

   Web and Java

5. What is archetype

   View Answer   

   It is maven project templating toolkit

Leading and Managing MCQ's

1. Gamification is

   View Answer   

   THE USE OF

2. What is Baxter?

   View Answer   

   An autonomous Drone

3. CI/CD stands for

   View Answer   

   Continuous Integration Continuous Deployment

4. Which of these are advantages of DevOps

   View Answer   

   ALL

5. What AI techniques are used in Chatbots?

   View Answer   

   ALL

Machine Learning MCQ's

1. If you have a basket of different fruit varieties with some prior information on size, color, shape of each and every fruit . Which learning methodology is best applicable?

   View Answer   

   super

2. If the outcome is binary(0/1), which model to be applied?

   View Answer   

   Logistic

3. For which one of these relationships could we use a regression analysis? Chose the correct one

   View Answer   

   HEIGHT

4. Which clustering technique requires prior knowledge of the number of clusters required?

   View Answer   

   k means

5. Which of the learning methodology applies conditional probability of all the variables with respective the dependent variable?

   View Answer   

   supervised