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Recent questions in Statistics

1 1 vote
1 1 answer
3.4k
3.4k views
In statistics, whats the difference between contingency and frequency tables?
1 1 vote
1 1 answer
1.1k
1.1k views
How to discover outliers of a data frame?
1 1 vote
1 1 answer
797
797 views
How do you tell a permutation problem from a combination problem?
Given the questions:1. How many different groups of 4 students can be made from a class of 40?and2. How many different lists of 4 students can be made from a class of 40?...
2 2 votes
1 answers 1 answer
791
791 views
What is the use of the Poisson Distribution?
Also, when would one use this distribution ?
1 1 vote
1 answers 1 answer
1.1k
1.1k views
How do we determine if two events are independent
0 0 votes
1 answers 1 answer
735
735 views
In the context of probability, what is the "event space"
0 0 votes
1 answers 1 answer
5.4k
5.4k views
What is the "Three-Standard-Deviations Rule"
This rule is also known as the "68–95–99.7 rule". What does this rule stand for and how does it help me?
0 0 votes
1 answers 1 answer
679
679 views
How do histograms help us understand a data set?
2 2 votes
1 answers 1 answer
752
752 views
What is a discrete random variable?
0 0 votes
1 answers 1 answer
983
983 views
What is the difference between permutation and combination?
0 0 votes
1 answers 1 answer
1.0k
1.0k views
What is the difference between Qualitative and Quantitative data?
4 4 votes
1 1 answer
1.3k
1.3k views
If x is the number that comes up when you roll a 20 sided die. What is the expected value of x?
If x is the number that comes up when you roll a 20 sided die. What is the expected value of x?
1 1 vote
0 0 answers
910
910 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
1.7k
1.7k views
Define measures of center (Median and Mode) ?
Define the 2 measures of centers.
2 2 votes
0 0 answers
487
487 views
What is "Random Sampling"?
Define random sampling
2 2 votes
1 1 answer
849
849 views
What is binomial experiment and when do we use it?
2 2 votes
1 1 answer
1.4k
1.4k views
When should we use permutation and combination?
1 1 vote
1 1 answer
956
956 views
Calculate IQR(Inter Quartile Range) of {18, 24, 19, 16, 21}?
2 2 votes
1 1 answer
944
944 views
What do population, parameter, census and sample mean in statistics?
2 2 votes
1 1 answer
741
741 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?
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