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Questions tagged [statistics]

Statistics is a branch of mathematics dealing with the collection, analysis, interpretation, presentation, and organization of data. For data requests, use the [data-request] tag instead, or consider our sister site Open Data Stack Exchange.

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7 votes
3 answers
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Type - I Error & Type - II Error: Pregnancy test analogy - is it legit?

I found this picture in my stats book but I'm now confused to what 'positive' and 'negative' is referring to. As seen in the table below, Type 1 error is the error that its H0 is actually true but ...
user8491363's user avatar
4 votes
1 answer
282 views

Have social accounting matrices and input output models fallen out of fashion? if so, why?

My perception may be uninformed but 'worldwide' I believe collection of official data on input output tables of economies dont seem to be keeping up with the times. Im aware that compilation of such ...
user3459004's user avatar
4 votes
1 answer
581 views

How does the companies set up utility function for its own purposes?

How does the companies set up utility function for its own purposes? In another word, what is the types statistics data that is usually consider and statistical method being used to set up these ...
Victor's user avatar
  • 743
4 votes
2 answers
215 views

Re-evaluation of Consumer Price Index (C.P.I.) weights

How are the weights of the various household items in the Consumer Price Index (C.P.I.) basket decided, i.e., how are they re-evaluated every year? Is it done manually or automatically? If its done ...
Python_user's user avatar
2 votes
1 answer
101 views

Why is the U.S. birth rate considered below replacement if more people are being born than are dying annually?

In 2018 there were 3.85 million births and 2.81 million deaths. My understanding is that the U.S. birth rate is near or below replacement rate, but I don't understand why. If more people are being ...
David Kennell's user avatar
2 votes
2 answers
907 views

Can CPI and real GDP have high correlation?

I have historical data where the CPI and GDP are correlated. Does this make sense? If not, how do I test for it?
Mataunited17's user avatar
1 vote
1 answer
143 views

Interpretation of regression output for different models

I am quite new to econometrics, hence, not very familiar with interpreting regression outputs. To me, the resources I've found online are quite confusing and cannot give me some practical guidance in ...
randomname's user avatar
0 votes
0 answers
53 views

Intuition of Linear Algebra visualisation for regression

Question: I want to clarify my understanding of the basics of OLS regression in matrix form. Let's assume we have 2 different independent variables $x_1$ and $x_2$. Our 'model' will be the plane that ...
CormJack's user avatar
  • 991