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Recent questions tagged statistics

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
512
512 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?
2 2 votes
1 1 answer
678
678 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
473
473 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?
2 2 votes
1 answers 1 answer
491
491 views
Two coins are flipped. What is the probability of getting heads twice?
1 1 vote
0 0 answers
360
360 views
What is the difference between Combination and Permutation?
As an example:Calculate the possible permutations for a rubik's cube?Why is it not, calculate the possible combinations for a rubik's cube?
2 2 votes
1 1 answer
736
736 views
Six devices (A,B,C,D,E, F) are each assigned one of three IP addresses...how many different assignments are possible?
Six devices (A,B,C,D,E, F) are each assigned one of three IP addresses (IP#1, IP#2, IP#3). If threedevices are assigned IP#1, two devices are assigned IP#2, and one devic...
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