Forum: Statistics

Here are the questions: 1.) the idea that your results happened by random chance or error, not due to any real differences 2.)To determine...

The number of people in the U.S. as measured by the U.S.Census is a ? There are a few choices: In my opinion, it is either (B)...

Hi. I chose a group of criteria for assessing a study's success. I'm looking at a group of studies and testing whether their reported success...

I am assessing the effects of some covariables and categorcial variables (exactly 5 independent variables) on a binary outcome. When I enter the...

Hi, I'm trying to find out if Pearson and Spearman correlations are equally suited for my data. I've computed some Pearson and Spearman correlations...

Hello everybody, I just recently started exploring R and mixed models in order to analyze the data for my master thesis. However, my data is not...

Hi everyone, I'm a beginner in statistics and SPSS. I have a hypothesis, an independent variable about the number of years of work experience...

Dear all, I would be very grateful for any advice. I would like to calculate if 2 statistical results are significantly different from one...

hi all, this is fairly elementary, though would appreciate any help: suppose I have 3 store locations that carry identical number of product types...

Hi, I am writing a short paper on voter turnout. I would like to use bianary logistic regression for this purpouse. I have one problem, my household...

I'm trying to understand elements of a Q Q plot and am struggling with the following.... So I understand if the quantiles of my sample match up...

Random variable X is normally distributed. Mean = β , standard deviation = h given that the difference of 68th percentile and 36th percentile is...

Hello, I'm looking at survival in mice with 10 different knockouts. I've exposed these knockouts to 6 different diets and am looking to do a...

Please Help! I need to find the mean the median and the mode and also use a t test to interpret my results between females and males in mate...

I'm working on a research project trying to identify motivation types and self-identity changes of the participants. Then I have to do group...

I am running a logistic regression with 7 IVs, N= 214. The model is significant and the R2 is .45. However, the individual variables show some odd...

I'm having trouble with a few questions in my text book and was hoping you could help...I need to know this for my exam and I just need some help...

Consider the function f(x)=e^{-x^2} . Using successfully higher order Taylor expansion , find two appropriate control functions. Then assuming ...

the transform T ' = f(T) of a sufficient statistic T by a function f(.) is usually not sufficient : only when f(.) is one-to-one is f(T) always...

Hey, I have one question about the p-value. So for example, the test statistics of something will be 1.7821. So to find the p-value we use z-score. ...

Ok so, the table starts from n=5 and ends at n = 25. Some questions I have are binomial questions that are for example X ~ (30, 0.5) <= is more...

Like the title says... I have 4 continuous IVs, whose combined effects (i.e. interactions possible) should predict a binary DV (possible values 1...

Hi, I am comparing data on gene expression between two different genes that have been tagged with GFP. Gene expression is measured using flow...

Please help me. I don't kown... how I solve the problem...

Hi everyone! I am currently doing a dissertation for my undergraduate studies. I am currently stuck with a question about Levene's Test for Equality...

Hello, I have a question concerning ANCOVA and was hoping one of you could help me out :). I tried looking all over the internet and of course in...

the Problems is in imiges files... please help me...

Hi all, I have two functions: X=A-B Y=A+2B I need to calculate the covariance of X and Y in terms of the (known) variances of A and B as...

Hey there, I have data I collected from a CEGE test of two game prototypes my group and I developed for a course. There were two respondents, who...

Hey guys. I've done a SLR and after testing the residuals for normality using the Shapiro-Wilk test and I've learned that the residuals are not...

Let X have a Binomial distribution with the number of trials n=15 and with probability of "success" p. We wish to test Ho: p=0.30 vs. H1: p doesn't...

I am given the data of-- 2.22, 1.96, 0.92, 1.77, 2.08, 1.60, 1.46, 1.73. I have a TI-84 Silver Plus Edition and I would like to know how to use it...

Could someone please point me to a good online resource for how to analyze and interpret a balanced incomplete block design using SPSS? Also, there...