methodology

There is this split-mouth randomized clinical trial, in which one side of the mouth receives a particular treatment, and the other side receives another treatment (usually used as the control treatment); (we do this after randomization of the left/right sides of the mouth to treatments A and X...

Currently collecting employment/working satisfaction data from survey at different countries. Same set of questions is used. I have come across that people from some countries tend to be more optimistic/pessimistic than others. How can I take their answering behaviour into consideration when...

Dear all, For my Master’s thesis, I have some difficulties with the statistical part of my research. I want to analyze the relationship between two variables: Investment in Innovation (R&D) --> Concentration Ratio 1. Research & Development (R&D) Investments in an industry 2. Concentration...

I have data on 80 motors, on each cycle, for each motor, different sensors give an indication. How do I suggest on the basis of this data that the motor is out of order? The motor is considered to be out of order if there are no more measurements on it. For example, there are measurements for...

Hi all, Currently I am struggling with getting the right method for the following research question: Do cross-border acquisitions lead to higher innovation output than domestic acquisitions? In order to answer this I have assembled the right M&A data and innovation data of firms...

Hello dear forum members! I am seeking your comments/advises on the following question related to assessing mediation effects. Following the general guidelines by Baron and Kenny (1986): 1. y(it) = a + x(it) + u --> significant impact 2. m(it) = a + x(it) + u (where m -- mediator) -->...

Hi everyone, I am examining the differences in media coverage of homicide on the basis of the religion of the victim (bias). The sample is one newspaper over several years. The quasi-independent variable is religion (1 = christian, 2 = muslim).. This is not a dichotomous variable as...

Data Assumptions: The sales on a particular day is always 60 There are 3 showrooms in the district There are other factors too(I have omitted the others for a simple understanding of the crux of the problem) Data availability: Daily sales of all showroom in the district (Data is available...

I'm trying to determine the best way to approach an optimization problem, but have been struggling to determine what statistical methods are appropriate. I've search for a few hours and nothing seems to click as an accurate approach. I have a day of data, broken down into hourly segments. For...

Hello all, First thank you in advance for any and all help given in response to this question. I've been searching this forum as well as other places online and I'm still confused about what methodology I should use in this experiment. DESIGN: Participants are given two questionnaires...

I would like to have a decision tree to choose best way to model data, similar to this example for choosing best statistical test: Thanks http://www.clinicalear.com/wp-content/uploads/2012/10/Statistics_Decision_tree.jpg Note: This question has also been posted in Stack forum with no...

My professor has asked me to do a validation study but I have never done one before and don't know what methodology or statistics to use. Basically the original study took a personality assessment with 27 scales and compared it to an ADHD assessment. A stepwise regression identified six scales...

I already posted on this, but haven't gotten an answer to my core question - which is, what type of statistical analysis should I run. I have many dependent variables I want to measure (change in volume measurements over time) and want to look at how medication effects those changes. I want to...

Hi, I am dealing with data in which the IV's are not easily partitioned - participants can belong to one, two+, or none of the categories for a given IV. Along with this, I am wanting to run the IV's on multiple DV's - differing volume measurements, so I am not quite sure how I would be able to...

Hi! I have a set of data which looks similar to the below Y1 Y2 Y3......Y20 Branch Sales Profits Sales Profits a x1 z1 x4 z4 b...

The population that i need to extract a sample from is all firms from country A with activities in country B. The firms are classified into two categories: as having a subsidiary in country B, or not having a subsidiary in country B (the activity could then be exports, which does not require a...

Hi all, I wonder whether some of you have some valuable input on which method I should use in my research. The main idea is that I decompose a explanatory variable from a standard OLS regression (x_t) into two components, predictable and unpredictable. I would like to test whether the effect...

Hello @all I want to analyze on how several factors have an effect on electricity consumtion (measured in mw). Before I start to gather the data, I want to be sure whether my methodology is fine. The outcome I want to achive is a forecast function. I have the data on consumtion over a...

Im looking for some help with a statistical method(s) that can support the research questions i am looking to answer. I am basically doing research on (1) user adoption of technology and (2) whether people believe that by adopting tehnology, it can yield benefits to others (such as in...

Hello there to everyone! I have the question concerning the underlying data analysis methodology. Here is the small introduction. There is a data from the e-commerce site about its customers' purchases and there are 875 observations total. Each observation consists of 5 values. Scales of value...