Forum: Applied Statistics

Hi, I am doing homework for an assignment in statistics. I cannot get my mind up for what contrasts are. Anyone can explain that in simple words? ...

So I am running a two-sample t-test , and wanted to set some preliminary accuracy goals. Ideally, I wanted to end the test when there was a...

Hey guys, I am currently facing some difficulty with my Bachelor's thesis, as I lack the proper quantitative skills to solve a problem on my own:...

Hi I'm a complete beginner to stats and I can't work out how I can analyse some data with SPSS despite it being very simple on the surface. I...

Hi, I have a financial data set of company-specific financial returns post a recurring event. I am interested in determining which factors would...

Econometrics question: http://i.imgur.com/dCHdGnm.png I would like to check that my answers are correct: for a. I wrote that it would be a DF test...

If I have a multiple response variable and none of the categories is checked, the subject should be coded as missing right? EX Race RWhite...

We generate surveys where we ask our customers about the quality of service provided. Responses are likert scale commonly (strongly agree, agree...

Hi my friends my dependent variable Y is measured for 5 years and had value 0 or 1 ( for five year the dependent variable is 1 or 0 not for each...

Hello everyone, First of all I have to apologize about how little I remember those statistics lessons from my study time. So try to be...

Hi Everybody, I know this is a long shot, but I need to start somewhere. I am wanting to use facebook data as part of my dissertation... the only...

Hi, I have a problem that I just cannot find a solution to. What type of distribution would salaries follow in, for example, the US? I would be...

I'm fairly new at stats. I have time-series data from a sensor. There are a lot of zeros in the data -- 70% of readings -- and those seem...

hello to you all i have some questions concerning how to treat missing data in my specific case (i am currently writing my bachelor thesis in...

I'm curious about the role statisticians are playing in, for example, the investigation of the recent incident in Boston. Any one have insight? or...

Anyone here working with sports data? Out of personal curiosity, I am interested in reading published analyses that assess the extent to which a new...

We have a panel data consisting of about 1000 firms with each about 150 monthly observations (Returns and distress measures such as Z-score). In...

hello everyone! i'm having a little bit of trouble with following a chain of identities using double-summation. i hope someone who's more...

I have data that consists of three different treatments (A, B, and C) on 22 patients (A:8, B:8, C:6). Measurements of bacterial composition were...

Hi, For my master thesis I've done some compression tests on concrete samples. The results are graph in the graph below, where the stress is...

I know what this is generally. What I am unclear on is exactly when you should use it. For instance I have seen this applied in some (rare) cases...

Hi I'm working on a thesis and I'm using a bit statistics to process the data. I have a population and in one sample (N=250) I measure the time it...

Hi all, First I would like to apologize if my description of my problem seems incomprehensible. As my english isn't exactly top notch and I find...

I have a small sample that I have analyzed with various methods, however I want to have a discussion with smarter people than I if there are...

Good morning, I want to run a pricing experiment to see the change in the number of purchases (i.e.demand) in response to a 10% increase in price...

I'm currently trying to estimate a demand function from a set of real variables. Would it still make sense to include a price index as a regressor...

Hi, I'm new to the forum. I am trying to conduct an event study on the effect of a particular event on daily airline stock returns. I'm not sure...

This is related to an ongoing project I struggle through.... I have a list of satisfaction variables (42) that are suspected of influencing...

Hi all I am not professional neither in economics nor in statistics, and I was wondering if you could help me: I am working on a project that...

Hello all, I've tried to find this elsewhere but can't seem to determine how to do it. I want to determine the implementing rate of GPS technology...

I am, I found out today, giving a presentation to my previous graduate program on real world use of data. Does any one know job sites that people can...

My lab has an Relative humidity analyser which states it is accurate to plus or minus 5%. If I use two similar analysers and take the average does...

I have a multivariate data set consisting of two groups with 5 specimens each. The data set describes types of bacteria in the gut of mice from two...

According to the efficient market theory, we can't predict the world tomorrow (e.g. future stock prices or exchane rates). Although, I have read some...

I have been trying to familiarize myself with statistics but I'm getting confused on what methods to use when answering what questions. For...

I have a system with 5 components. Every 10 seconds the signal travels to all of them and I know how many of them responded. I need to know there...

I am analyzing bird count data from surveys conducted each week (from Nov-April, when bird foraging most active near breeding cycle) for 6 years in 9...

Hi I am looking for a way to reduce data points in a multidimensional matrix. Example: Variable 1: A1, A2, A3 Variable 2:

Hello to everyone and thanks for your time. I have a variable theta, distributed normally. I have a function V. I know how to calculate the...

Hello. So just finished running a fundraising event, and my team is trying to measure how much value having an app had and if it was worth it's...

So I was reading about a couple of risk measures (Wang's transform risk measure and Proportional Hazard risk measure) in a pdf document that I found...

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