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How do I compare the count of a value in each year while having a different sanple size each year.
How do I accurately compare between the number of something a survey measure from my employees each year with a varying umber of survey engagement and employee size?If I ...
1 1 vote
0 0 answers
575
575 views
Using aggregate data to generate observation-level data statistically sound?
Context: In the realm of Paid Search Marketing. Current reporting does not provide event level data only aggregate totals with different segments. Want to compare distri...
1 1 vote
1 1 answer
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What is the rule that determines percentages with the mean +- 1,2 or 3 standard deviations?
2 2 votes
2 2 answers
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What will be probability for the data items within mean +- 1, +-2, +-3 standard deviation?
1 1 vote
1 1 answer
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How much percentage of data items are consumed within mean +-1 , +-2, +-3 standard deviation?
1 1 vote
1 answers 1 answer
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What is a test statistic in hypothesis testing and how does it relate to the p-value?
1 1 vote
1 answers 1 answer
853
853 views
What is sampling error?
1 1 vote
1 1 answer
960
960 views
In the first week of November 2003.... What is the expected number of homicides per week in the GTA?
This is from question one from lecture 4B's exercises: "In the first week of November 2003, five unrelated homicides were reported in the GTA. The GTA usually has about 7...
1 1 vote
1 1 answer
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3.4k views
In statistics, whats the difference between contingency and frequency tables?
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
752
752 views
What is a discrete random variable?
0 0 votes
1 answers 1 answer
982
982 views
What is the difference between permutation and combination?
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1 answers 1 answer
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What is the difference between Qualitative and Quantitative data?
4 4 votes
1 1 answer
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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
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Define measures of center (Median and Mode) ?
Define the 2 measures of centers.
2 2 votes
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487
487 views
What is "Random Sampling"?
Define random sampling
2 2 votes
1 1 answer
847
847 views
What is binomial experiment and when do we use it?
2 2 votes
1 1 answer
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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}?
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