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Recent questions in Statistics

1 1 vote
1 1 answer
3.5k
3.5k views
In statistics, whats the difference between contingency and frequency tables?
1 1 vote
1 1 answer
1.2k
1.2k views
How to discover outliers of a data frame?
1 1 vote
1 1 answer
877
877 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
875
875 views
What is the use of the Poisson Distribution?
Also, when would one use this distribution ?
1 1 vote
1 answers 1 answer
1.2k
1.2k views
How do we determine if two events are independent
0 0 votes
1 answers 1 answer
804
804 views
In the context of probability, what is the "event space"
0 0 votes
1 answers 1 answer
5.5k
5.5k 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
736
736 views
How do histograms help us understand a data set?
2 2 votes
1 answers 1 answer
830
830 views
What is a discrete random variable?
0 0 votes
1 answers 1 answer
1.1k
1.1k views
What is the difference between permutation and combination?
0 0 votes
1 answers 1 answer
1.1k
1.1k views
What is the difference between Qualitative and Quantitative data?
4 4 votes
1 1 answer
1.4k
1.4k 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
995
995 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
1.8k
1.8k views
Define measures of center (Median and Mode) ?
Define the 2 measures of centers.
2 2 votes
0 0 answers
532
532 views
What is "Random Sampling"?
Define random sampling
2 2 votes
1 1 answer
909
909 views
What is binomial experiment and when do we use it?
2 2 votes
1 1 answer
1.5k
1.5k views
When should we use permutation and combination?
1 1 vote
1 1 answer
1.0k
1.0k views
Calculate IQR(Inter Quartile Range) of {18, 24, 19, 16, 21}?
2 2 votes
1 1 answer
1.0k
1.0k views
What do population, parameter, census and sample mean in statistics?
2 2 votes
1 1 answer
823
823 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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