Punjabi By Nature is going through a rough phase and is wasting 30-40 Kgs of biryani on some days of the week. Management is thinking to find a method to sell the left over biryani or reduce the amount of biryani ...

solved 2

Case Study 55 years 16 Answers 16375 views Contributor

Question 7

SQL Interview question

Question

Write a query to get all the student with name length 10, starting with K and ending with z

solved 3

SQL 55 years 25 Answers 3286 views Contributor

Question 8

Write a SQL query to find all the student names Nitin in a table

Question

Table is student column is name Make sure that you cover all the corner cases

solved 2

SQL 55 years 25 Answers 3223 views Contributor

Question 9

Ranking in SQL

Question

We have the following values 10000 10000 20000 30000 30000 30000 What would be the result of row number, rank, and dense rank ?

solved 3

SQL 55 years 21 Answers 2604 views Contributor

Question 10

Can you use HAVING command without any aggregate function in SQL?

Question

A bit tricky, do give a try

solved 3

SQL 55 years 27 Answers 6094 views Contributor

Question 11

SQL interview Question | Second Highest Salary – Ranking

Question

Write a SQL query to get second highest query using Ranking

in progress 2

SQL 55 years 27 Answers 3082 views Grand Master

Question 12

SQL interview Question | Second Highest Salary – Method 1

Question

Write a SQL query to get second highest query using sub query

in progress 0

SQL 55 years 33 Answers 3868 views Grand Master

Question 13

SQL interview question | Write the query

Question

We have two columns(Revenue and Cost Price) in a table like below, get me the Profit column Revenue Cost Price Profit 100 Null ...

solved 16

SQL 55 years 46 Answers 5429 views Grand Master

Question 14

What is the order of execution of SQL commands?

Question

How does the SQL commands flow at the back end?

solved 6

SQL 55 years 27 Answers 6222 views Grand Master

Question 15

Model deployment

Question

What are the external factors that data scientists should give importance too while model deployment

in progress 0

Machine Learning 55 years 1 Answer 808 views Newbie

Question 16

What are the different types of sorting algorithms available?

Question

In R language

in progress 1

R 55 years 1 Answer 865 views Great Grand Master

Question 17

What is lapply() function in R?

Question

With example

in progress 0

R 55 years 2 Answers 1015 views Contributor

Question 18

interview question

Question

Is it better to have too many false positives or too many false negatives? Explain

in progress 0

Machine Learning 55 years 1 Answer 846 views Contributor

Question 19

interview question

Question

Which is more important to you – model accuracy or model performance?

in progress 0

Machine Learning 55 years 2 Answers 1062 views Contributor

Question 20

While working on a data set, how do you select important variables?

Question

Explain your methods.

solved 0

Machine Learning 55 years 2 Answers 1939 views Great Grand Master

Question 21

How much is the annual income of a beggar in Bangalore?

Question

Guesstimate

solved 6

Guesstimate 55 years 26 Answers 4313 views Grand Master

Question 22

What is the use of OFFSET command?

Question

With coding example

solved 11

SQL 55 years 34 Answers 4951 views Grand Master

Question 23

How would you explain the concept of p-value to a layman ?

Question

In simple terms

solved 2

Statistics 55 years 24 Answers 2688 views Grand Master

Question 24

What is the difference between forecasting and prediction?

Question

Both of these terms look similar

solved 1

Machine Learning 55 years 21 Answers 2589 views Grand Master

Question 25

Suppose you have 10 samples, where 8 are positive and 2 are negative, how to calculate Entropy (important to know)

Question

A bit mathematical

in progress 1

Machine Learning 55 years 21 Answers 1943 views Grand Master

Question 26

What are the Parametric machine learning algorithm and nonparametric machine learning algorithm

Question

Examples

in progress 0

Machine Learning 55 years 1 Answer 794 views Grand Master

Question 27

Explain Missing Value Treatment by mean,mode, median, and KNN Imputation

Question

What is missing value treatment

solved 1

Machine Learning 55 years 16 Answers 7639 views Grand Master

Question 28

What is Feature Engineering? Explain with Example?

Question

Explain with example

solved 0

Machine Learning 55 years 2 Answers 831 views Grand Master

Question 29

Case Study | Amazon Data Science interview

Question

Taj group is planning to open a new restaurant in Rohtak. To make it reach to the masses they need to advertise and let people know that they are here, and there is nothing better than digital marketing. As a head ...

in progress 0

Case Study 55 years 0 Answers 1890 views Contributor

Question 30

What do you understand by element recycling?

Question

In context with R

in progress 0

R 55 years 1 Answer 1030 views Great Grand Master

Question 31

How can you resample statistical tests in R language?

Question

Be specific

1

R 55 years 0 Answers 998 views Great Grand Master

Question 32

What will be the result of multiplying two vectors in R ?

Question

They have different lengths.

in progress 0

R 55 years 2 Answers 1039 views Great Grand Master

Question 33

How will you convert a factor variable to numeric in R language ?

Question

Give an example

in progress 0

R 55 years 1 Answer 907 views Great Grand Master

Question 34

Is it possible to model transitioning data like time-zone or a working directory?

Question

State reason behind your answer.

0

R 55 years 0 Answers 837 views Great Grand Master

Question 35

Explain Python’s parameter-passing mechanism.

Question

How is it done?

in progress 0

Python 55 years 1 Answer 1128 views Great Grand Master

Question 36

. What are all different types of collation sensitivity?

Question

Explain each with an example

0

Python 55 years 0 Answers 892 views Great Grand Master

Question 37

Case Study | Uber Interview Question

Question

You’re Uber and you want to design a heat map to recommend to drivers where to wait for a passenger. How would you approach this?

in progress 0

Case Study 55 years 1 Answer 2498 views Contributor

Question 38

Case Study | Zomato Interview Question

Question

Taj Group of Hotels is planning to start a new branch, What are the parameters it should consider to find the appropriate place? Talk about ROI, Demography, Labour cost, etc.

in progress 0

Case Study 55 years 0 Answers 2252 views Contributor

Question 39

Case Study | Interview Question

Question

How do you think TVF makes a profit? Did moving to its own website advantageous to TVF? Opinion based question

0

Case Study 55 years 0 Answers 923 views Contributor

Question 40

Statistics Basics

Question

The mean of a distribution is 20 and the standard deviation is 5. What is the value of the coefficient of variation?

in progress 3

Statistics 55 years 43 Answers 4898 views Contributor

Question 41

Statistics Basics 2 | Interview Question

Question

Which of the following describe the middle part of a group of numbers? a. Measure of Variability b. Measure of Central Tendency c. Measure of Association d. Measure of Shape

in progress 0

Statistics 55 years 26 Answers 2386 views Contributor

Question 42

Statistics Basics 3 | Interview Question

Question

According to the empirical rule, approximately what percent of the data should lie within μ±2σ?

in progress 0

Statistics 55 years 29 Answers 2728 views Contributor

Question 43

Statistics Basics 4 | Interview Question

Question

The sum of the deviations about the mean is always: a. Range b. Zero c. Total Deviation d. Positive

in progress 0

Statistics 55 years 3 Answers 1055 views Contributor

Question 44

Statistics Basics 5 | Interview Question

Question

The middle value of an ordered array of numbers is the a. Mode b. Mean c. Median d. Standard Deviation

in progress 0

Statistics 55 years 3 Answers 1153 views Contributor

Question 45

Statistics Basics 6 | Interview Question

Question

Which of these is a measure of dispersion:- a. Mean b. Median c. Quartile d. Standard Deviation Define the term as well

in progress 0

Statistics 55 years 3 Answers 998 views Contributor

Question 46

Statistics Basics 7 | Interview Question

Question

Variance of a dataset is 144, what is the Standard Deviation? Give a basic understanding of both the terms

in progress 0

Statistics 55 years 1 Answer 938 views Contributor

Question 47

What is an Index?

Question

Describe Types as well

in progress 0

SQL 55 years 1 Answer 1198 views Contributor

Question 48

Central Tendency

Question

Which of these measures are used to analyze the central tendency of data? A) Mean and Normal Distribution B) Mean, Median and Mode C) Mode, Alpha & Range D) Standard Deviation, Range and Mean E) Median, Range and Normal Distribution

in progress 0

Statistics 55 years 1 Answer 1151 views Contributor

Question 49

Mean

Question

Five numbers are given: (5, 10, 15, 5, 15). Now, what would be the sum of deviations of individual data points from their mean? A) 10 B)25 C) 50 D) 0 E) None of the above

in progress 0

Statistics 55 years 2 Answers 951 views Contributor

Question 50

Mean, Median and Mode

Question

A test is administered annually. The test has a mean score of 150 and a standard deviation of 20. If Ravi’s z-score is 1.50, what was his score on the test?

in progress 0

Statistics 55 years 2 Answers 1179 views Contributor

Register Now

Login

Lost Password

Welcome to The Data Monk