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Recent questions in Data Science

1 1 vote
0 0 answers
618
618 views
What is the probability of getting a King of Hearts?
What is the probability of picking a King of Hearts in a standard 52 card deck?
2 2 votes
1 1 answer
1.4k
1.4k views
Define measures of center (Median and Mode) ?
Define the 2 measures of centers.
2 2 votes
0 0 answers
342
342 views
What is "Random Sampling"?
Define random sampling
2 2 votes
1 1 answer
623
623 views
What is binomial experiment and when do we use it?
2 2 votes
1 1 answer
1.2k
1.2k views
When should we use permutation and combination?
1 1 vote
1 1 answer
730
730 views
Calculate IQR(Inter Quartile Range) of {18, 24, 19, 16, 21}?
2 2 votes
1 1 answer
720
720 views
What do population, parameter, census and sample mean in statistics?
2 2 votes
1 1 answer
511
511 views
Question for Discrete random variable
An investor has a 0.60 probability of making a 20000 dollar profit and a 0.40 probability of suffering a 25000 dollar loss. What is the expected value?
1 1 vote
1 1 answer
599
599 views
Sample question of permutation and combination.
You can bring along 2 friends! you have 5 friends who want to come along. How many different groups of friends could you take with you?
1 1 vote
1 1 answer
788
788 views
{1.75, 1.63, 1.55, 1.92, 1.81, 1.79, 1.81}. Determine the mean, the median, and the 20th percentile?
1 1 vote
1 1 answer
1.2k
1.2k views
What is difference between discrete numerical variable and continuous numerical variable?
1 1 vote
1 1 answer
652
652 views
How should I reduce file size of a word document when I attach high resolution pictures?
I need to submit an assignment in Word Document format, and the size of file is so big after attaching the photos taken by my cell-phone, what should I do?
2 2 votes
1 1 answer
677
677 views
What is the mean and standard deviation of a standard normal distribution?
3 3 votes
1 answers 1 answer
457
457 views
Find the expected value of X from the probability table.
Find the expected value of X from the probability table. X 12 3 P(X) 0.3 0.80.4
3 3 votes
1 1 answer
5.1k
5.1k views
How many unique ways are there to arrange the letters in the word PRIOR?
2 2 votes
1 answers 1 answer
472
472 views
If a die is rolled, find the probability of rolling an even number
1 1 vote
1 answers 1 answer
1.1k
1.1k views
What is the difference between Descriptive Statistics and Inferential Statistics?
2 2 votes
1 answers 1 answer
647
647 views
What is the Empirical Rule?
3 3 votes
1 answers 1 answer
405
405 views
A gambling machine accepts 5 dollars and generates a random dollar value (x) between 1 and 10.
A gambling machine accepts 5 dollars and generates a random dollar value (x) between 1 and 10.What is the distribution of x?What is the expected value of x?Is it smart to...
2 2 votes
1 answers 1 answer
883
883 views
What is the difference between joint and conditional probability?
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