All Questions
11 questions
3
votes
0
answers
50
views
Question about using the chi-square test on an astronaut dataset to determine if over 1000 hours in space and early mortality are related
I am analyzing an astronaut dataset to try and determine if a high number of hours flown in space (>1000) by an astronaut is related to premature death (which I defined as dying before the age of ...
- 171
0
votes
0
answers
23
views
A question about the right statistical test
let's say that I have a table as follows
SSE1 SSE2 SSE3 SSE4 SSE5
frequncy 125 200 259 300 200
and I want to see if there is a ...
- 367
1
vote
0
answers
18
views
The right test to check whether the two tables are independent from each other [closed]
Table A
Group
Year 1
Year 2
1
0.4
0.45
2
0.3
0.33
3
0.2
0.6
4
0.1
0.12
5
0.07
0.11
6
0.03
0.06
7
0.01
0.02
Table B
Group
Year 1
Year 2
1
0.43
0.42
2
0.313
0.39
3
0.223
0.65
4
0.112
0.18
...
- 11
0
votes
0
answers
70
views
Chi-square, p-value and political elections
I am looking at which category is mostly associated with people who voted.
A sample of results from my dataset is as follows
...
- 85
3
votes
4
answers
84
views
Is there an association between the work status of the college students and the challenges facing them?
So I am supposed to do a study about the online learning obstacles. now the research question is as stated as follows:"Is there an association between the work status of the college students and ...
- 31
0
votes
0
answers
23
views
Is there a minimum number of entries in a bin to consider it for computing $\chi^2$ ? and for gaussian behaviour? [duplicate]
Let's consider a set of data points of some observable in several bins, and a theoretical model.
The agreement between the two is using the $\chi^2/ndf$ formula (where we divide $\chi^2$ by the number ...
2
votes
1
answer
575
views
Chi Square test or McNemar test?
I've got a set of 1000 patients and I am measuring two different blood values (CRP and IL6) and choosing a categorical cutoff values for both (CRP>10 and IL6 >2). I now would like to know if there is ...
- 23
1
vote
1
answer
121
views
Statistical test for multiple reponses?
I ran a survey and one question was to indicate which accommodation (hotels, apartment, b&b, ...) respondents prefer when travelling. Thery were allowed to select more than one option. The survey ...
- 25
2
votes
1
answer
509
views
$t$ test vs $\chi^{2}$ once sample is split into two groups?
I would appreciate some guidance regarding the use of a t test vs $\chi^{2}$.
I am looking at some small set of demographic data (n only 13). I have divided up the sample into two sets, those with ...
- 443
1
vote
2
answers
63
views
What is the best method of performing a chi-squared test with only one set of data?
I am trying to perform a chi-squared test on the following data:
Achieved: 31
Expected: 19.87179
From a total of: 182
Is it possible to perform such a test on just one item of data like this?
All ...
- 45
3
votes
1
answer
469
views
Am I using the wrong statistical test?
I am using $\chi^2$ to analyze a set of data gathered over 4 time periods. The two variables are independent--each 'event' is categorized as 'good' or 'bad'. We want to prove that the intervention ...
- 33