A disc is spinning on a spindle and you don't know the direction in which way the disc is spinning. You are provided with a set of pins.How will you use the pins to describe in which way the disc is spinning?
192You are given 50 cards with five different colors- 10 Green cards, 10 Red Cards, 10 Orange Cards, 10 Blue cards, and 10 Yellow cards. The cards of each colors are numbered from one to ten. Two cards are picked at random. Find out the probability that the cards picked are not of same number and same color.
165Pick up a coin C1 given C1+C2 with probability of trials p (h1) =.7, p (h2) =.6 and doing 10 trials. And what is the probability that the given coin you picked is C1 given you have 7 heads and 3 tails?
145Post New Data Science Questions
Suppose that American Express has 1 million card members along with their transaction details. They also have 10,000 restaurants and 1000 food coupons. Suggest a method which can be used to pass the food coupons to users given that some users have already received the food coupons so far.
How do data scientists use statistics?
What is the difference between cluster and systematic sampling?
What is the difference between “long” and “wide” format data?
How can outlier values be treated?
What are the various types of selection bias?
What is t test?
What are big data and data science?
Why data cleaning plays a vital role in analysis?
What is advantage of using apply family of functions in r? How do you use lambda in python?
How can you deal with different types of seasonality in time series modelling?
What is nosql? Name some examples of nosql databases.
Give some situations where you will use an SVM over a RandomForest Machine Learning algorithm and vice-versa?
How can you generate a random number between 1 – 7 with only a die?
Explain the differences between bivariate and multivariate analysis?
