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Recent questions tagged statistics

2 2 votes
0 0 answers
415
415 views
What is "Random Sampling"?
Define random sampling
2 2 votes
1 1 answer
741
741 views
What is binomial experiment and when do we use it?
2 2 votes
1 1 answer
1.3k
1.3k views
When should we use permutation and combination?
1 1 vote
1 1 answer
869
869 views
Calculate IQR(Inter Quartile Range) of {18, 24, 19, 16, 21}?
2 2 votes
1 1 answer
833
833 views
What do population, parameter, census and sample mean in statistics?
2 2 votes
1 1 answer
627
627 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
725
725 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
971
971 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
1.3k
1.3k views
What is difference between discrete numerical variable and continuous numerical variable?
2 2 votes
1 1 answer
801
801 views
What is the mean and standard deviation of a standard normal distribution?
3 3 votes
1 answers 1 answer
572
572 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
5.3k
5.3k views
How many unique ways are there to arrange the letters in the word PRIOR?
2 2 votes
1 answers 1 answer
585
585 views
If a die is rolled, find the probability of rolling an even number
1 1 vote
1 answers 1 answer
1.2k
1.2k views
What is the difference between Descriptive Statistics and Inferential Statistics?
2 2 votes
1 answers 1 answer
778
778 views
What is the Empirical Rule?
3 3 votes
1 answers 1 answer
509
509 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
993
993 views
What is the difference between joint and conditional probability?
2 2 votes
1 answers 1 answer
598
598 views
Two coins are flipped. What is the probability of getting heads twice?
1 1 vote
0 0 answers
410
410 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
910
910 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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