Recent activity in general

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How do I compare the count of a value in each year while having a different sanple size each year.

asked Jun 8, 2022 in general by Nescafeadjust (120 points)

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0 answers 194 views

Using aggregate data to generate observation-level data statistically sound?

asked Jun 11, 2019 in general by bwang15 (130 points)

+2 votes

2 answers 424 views

What will be probability for the data items within mean +- 1, +-2, +-3 standard deviation?

answered Nov 30, 2018 in general by Rathin (820 points)

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1 answer 547 views

What is the rule that determines percentages with the mean +- 1,2 or 3 standard deviations?

answered Nov 17, 2018 in general by Mike Banks (600 points)

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1 answer 613 views

How much percentage of data items are consumed within mean +-1 , +-2, +-3 standard deviation?

answered Nov 14, 2018 in general by Deep Patel (700 points)

+1 vote

1 answer 343 views

What is a test statistic in hypothesis testing and how does it relate to the p-value?

asked Nov 12, 2018 in general by andystanley (1.1k points)

+1 vote

1 answer 289 views

What is sampling error?

answered Nov 12, 2018 in general by andystanley (1.1k points)

+1 vote

1 answer 614 views

In the first week of November 2003.... What is the expected number of homicides per week in the GTA?

answered Nov 2, 2018 in general by KenTheStatsMan (430 points)

+1 vote

1 answer 2.6k views

In statistics, whats the difference between contingency and frequency tables?

answered Oct 30, 2018 in general by askds (500 points)

+2 votes

1 answer 1.1k views

Define measures of center (Median and Mode) ?

answered Oct 27, 2018 in general by rozhan (710 points)

+1 vote

1 answer 424 views

Calculate IQR(Inter Quartile Range) of {18, 24, 19, 16, 21}?

retagged Oct 16, 2018 in general by AskDataScience (116k points)

+1 vote

1 answer 312 views

How do you tell a permutation problem from a combination problem?

answered Oct 15, 2018 in general by AskDataScience (116k points)

+1 vote

0 answers 312 views

What is the probability of getting a King of Hearts?

reshown Oct 14, 2018 in general by AskDataScience (116k points)

+4 votes

1 answer 679 views

If x is the number that comes up when you roll a 20 sided die. What is the expected value of x?

answered Oct 13, 2018 in general by AskDataScience (116k points)

+2 votes

1 answer 258 views

What is a discrete random variable?

answered Oct 12, 2018 in general by Mike Banks (600 points)

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1 answer 389 views

What is the difference between permutation and combination?

answered Oct 12, 2018 in general by Mike Banks (600 points)

0 votes

1 answer 456 views

What is the difference between Qualitative and Quantitative data?

answered Oct 12, 2018 in general by Mike Banks (600 points)

+2 votes

1 answer 299 views

What is binomial experiment and when do we use it?

answered Oct 12, 2018 in general by Deep Patel (700 points)

+2 votes

0 answers 173 views

What is "Random Sampling"?

asked Oct 12, 2018 in general by Ahmed Merah (270 points)

+2 votes

1 answer 865 views

When should we use permutation and combination?

answered Oct 12, 2018 in general by Deep Patel (700 points)

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